56 Airworthiness Directives: 45 airplane, 5 rotorcraft, 5 engine, 1 appliance.
AD 2001-10-04 R1 · published Jun 4, 2001, effective Jun 8, 2001
Air Tractor, Inc. AT-400, AT-500, and AT-800 Series Airplanes
This amendment revises AD 2001-10-04, which concerns certain Air Tractor, Inc. (Air Tractor) AT-400, AT-500, and AT-800 series airplanes. AD 2001-10-04 superseded AD 2000-14-51 and lowers the safe life for the wing lower spar cap on these airplanes. The AD was the result of numerous reports of cracks in the 3/8-inch bolthole of the wing lower spar cap on the affected airplanes. We inadvertently included certain AT-800 series airplanes in the Applicability of this AD. Those AT-800 series airplanes that are equipped with the factory- supplied part number 80540 computerized fire gate should not be affected by AD 2001-10-04. This action revises the AD to reflect this change and to provide information for applying for an alternative method of compliance with this AD. The actions specified by this AD are intended to prevent fatigue cracks from occurring in the wing lower spar cap before the originally established safe life is reached. Fatigue cracks in the wing lower spar cap, if not detected and corrected, could result in the wing separating from the airplane during flight.
AD 2000-25-02 R1 · published Jun 6, 2001, effective Jul 13, 2001
American Champion Aircraft Corporation 7, 8, and 11 Series Airplanes
This amendment clarifies information contained in Airworthiness Directive (AD) 2000-25-02, which concerns certain American Champion Aircraft Corporation (ACAC) 7, 8, and 11 series airplanes. This AD currently requires inspecting the front and rear wood spars for damage, including installing any as-needed inspection holes; and repairing or replacing any damaged wood spar. We incorrectly referenced the initial inspection compliance time of this AD as "whichever occurs later." The notice of proposed rulemaking (NPRM) contained the correct reference of "whichever occurs first." This action revises the AD to reflect the correct reference in the compliance time. The actions specified by this AD are intended to detect and repair or replace damaged wood wing spars. Continued operation with such damage could progress to in-flight structural failure of the wing with consequent loss of control of the airplane.
AD 2001-11-02 · published Jun 6, 2001, effective Jul 23, 2001
Pilatus Aircraft LTD Models PC-12 and PC-12/45 Airplanes
This amendment supersedes Airworthiness Directive (AD) 99-17- 08, which currently requires modifying the generator 2 excitation by removing certain diodes and installing a new 5-amp circuit breaker and suppression filter on certain Pilatus Aircraft Ltd. (Pilatus) Models PC-12 and PC-12/45 airplanes. This AD is the result of the Federal Aviation Administration's determination that the A250 voltage spike suppression filter in the modification kit can cause the circuit breaker 235 to trip because of overload. In extreme circumstances, this can lead to overheating of wiring. This AD requires you to modify the generator 2 excitation by removing certain diodes and installing a new 5-amp circuit breaker and suppression filter of improved design in accordance with revised procedures. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Switzerland. The actions specified by this AD are intended to prevent damage to electrical components if generator 2 is not switched off before engine shutdown and it overheats. This could result in loss of electrical power to certain critical airplane components.
AD 2001-11-03 · published Jun 6, 2001, effective Jul 20, 2001
Raytheon Aircraft Company Beech Models F33A, A36, B36TC, 58/58A, C90A, B200, and 1900D Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Raytheon Aircraft Company (Raytheon) Beech Models F33A, A36, B36TC, 58/58A, C90A, B200, and 1900D airplanes equipped with a KA-33 cooling blower. This AD requires you to incorporate certain electrical parts to protect cooling blowers. This AD is the result of several reports of circuit breakers failing to protect cooling blowers on the affected airplanes. The actions specified by this AD are intended to protect the blower motor circuit and reduce the possibility of emission of smoke or a burning odor into the cockpit or passenger compartment as a result of a failed or seized blower motor.
AD 2001-11-04 · published Jun 6, 2001, effective Jul 23, 2001
Raytheon Aircraft Company Models 99, 99A, 99A (FACH), A99, A99A, B99, and C99 Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Raytheon Aircraft Company (Raytheon) Models 99, 99A, 99A (FACH), A99, A99A, B99, and C99 airplanes. This AD requires you to inspect all main landing gear (MLG) hydraulic actuators to determine the end cap part number that is installed, and replace any actuator that has a part number 4A125C32 end cap. This AD is the result of the potential for fatigue cracks to develop on the MLG hydraulic actuator end caps. The actions specified by this AD are intended to eliminate existing and prevent future fatigue cracks in the MLG hydraulic actuator end caps. Such cracks could cause hydraulic fluid to leak and result in collapse of one or more gears with consequent aircraft damage and passenger injury.
AD 2001-11-10 · published Jun 6, 2001, effective Jun 21, 2001
Bombardier Model DHC-8-400 Series Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Bombardier Model DHC-8-400 series airplanes. This action requires revising the Normal and Abnormal Sections of the FAA-approved Airplane Flight Manual to include procedures that enable the flightcrew to determine if the main landing gear (MLG) is extended before landing and to take appropriate actions, if necessary. The actions specified in this AD are intended to ensure that the flightcrew is advised of a potential gear-up landing due to misleading indications of the MLG extension, and has the procedures necessary to address that potential condition. This action is intended to address the identified unsafe condition.
AD 2001-06-16 · published Jun 11, 2001, effective May 7, 2001
McDonnell Douglas Model DC-9-80 Series Airplanes and Model MD-88 Airplanes
This document corrects information in an existing airworthiness directive (AD) that applies to all McDonnell Douglas Model DC-9-80 series airplanes and Model MD-88 airplanes. That AD currently requires revisions to the Airplane Flight Manual (AFM) and installation of inspection aids on the wing upper surfaces. That AD also requires, among other actions, installation of an overwing heater blanket system or primary upper wing ice detection system, and installation of a heater protection panel or an equipment protection device on certain overwing heater blanket systems. This document corrects an incorrect paragraph reference. This correction is necessary to ensure that operators are aware of an incorrect paragraph reference in paragraph (d)(2)(ii)(A) of the existing AD.
AD 2001-09-51 · published Jun 11, 2001, effective Jun 18, 2001
Boeing Model 737-600, -700, -700C, and -800 Series Airplanes
This document publishes in the Federal Register an amendment adopting airworthiness directive (AD) 2001-09-51 that was sent previously to all known U.S. owners and operators of Boeing Model 737- 600, -700, -700C, and -800 series airplanes by individual notices. This AD requires inspection of the small jam nut on the elevator tab control rods to detect inspection putty and to determine its condition; a torque check of the small and large jam nuts on the tab control rod, if necessary; and corrective actions, as applicable. For certain airplanes, this AD also requires a one-time inspection for torque of the small and large jam nuts on the tab control rods; and corrective actions, as applicable. This action is prompted by reports indicating that operators found problems with the elevator tab control rods during accomplishment of an existing AD. The actions specified by this AD are intended to prevent excessive freeplay in the tab control mechanism, which could result in elevator tab flutter and consequent loss of controllability of the airplane.
AD 2001-11-06 · published Jun 11, 2001, effective Jul 16, 2001
Boeing Model 747 Series Airplanes
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Boeing Model 747-100 series airplanes, that currently requires repetitive inspections to detect cracking of the outer chord of the body station (BS) 1480 upper and lower bulkhead and longeron splice fitting; repair, if necessary; and modification of the skin splice plate, the outer chord splice fitting, and the stringer interface of the lower bulkhead, if necessary. This amendment revises the applicability of the existing AD to add additional airplanes, requires accomplishment of previously optional inspections and clarifies those inspections, extends certain compliance times, and requires additional work in certain areas. This amendment is prompted by reports that fatigue cracking has been found in the outer chord of the BS 1480 bulkhead at the overwing longeron splice on airplanes not subject to the existing AD. The actions specified by this AD are intended to detect and correct fatigue cracking of the skin, splice fittings, bulkhead web, and outer chord of the BS 1480 upper and lower bulkhead and longeron splice fitting, which could result in reduced structural integrity of the fuselage and the inability to carry limit load.
AD 2001-11-07 · published Jun 11, 2001, effective Jul 16, 2001
Boeing Model 737, 757, and 767 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 737, 757, and 767 series airplanes. This AD requires repetitive operational checks of certain motor- operated hydraulic shutoff valves to detect malfunctioning; replacement with new valves, if necessary; and eventual replacement of certain existing valves with new valves, which terminates the repetitive inspections. This amendment is prompted by reports that various intermittent limit-switch problems have caused valve failures. The actions specified by this AD are intended to prevent failure of the motor-operated hydraulic shutoff valves, which could result in leakage of hydraulic fluid to the engine fire zone, reduced ability to retract the landing gear, loss of backup electrical power or other combinations of failures; and consequent reduced controllability of the airplane.
AD 2001-11-08 · published Jun 11, 2001, effective Jul 16, 2001
Boeing Model 747-400, 747-400F, 757-200, 757-200CB, 757-200PF, 767-200, 767-300, and 767-300F Series Airplanes
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Boeing Model 747-400, 757-200, 767-200, and 767-300 series airplanes, that currently requires repetitive checks to detect certain failures in the warning electronic unit (WEU) or modular avionic warning electronic assembly (MAWEA); repetitive tests to detect any failure of tactile, visual, or aural alerts generated by the WEU or MAWEA; and corrective action, if necessary. This amendment makes these requirements applicable to other airplanes on which the defective power supplies may be installed, eliminates the repetitive tests for certain airplanes, and increases the interval for the repetitive tests for certain other airplanes. This amendment also requires replacing any subject power supply in the WEU or MAWEA with a new, modified, or serviceable power supply. The actions specified by this AD are intended to prevent failure of the WEU or MAWEA power supplies, which could result in loss of visual, aural, and tactile alerts to the flightcrew. Absence of such alerts could result in the flightcrew being unaware that an immediate or appropriate action should be taken in the event of an unsafe condition.
AD 2001-11-09 · published Jun 11, 2001, effective Jun 26, 2001
Airbus Model A330 and A340 Series Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Airbus Model A330 and A340 series airplanes. This action requires repetitive inspections to detect discrepancies of the transfer tubes and the collar of the ball nut of the trimmable horizontal stabilizer actuator (THSA); and corrective action, if necessary. This action is necessary to prevent degraded operation of the THSA due to the entrance of water into the ball nut. Degraded operation could lead to reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
AD 2001-11-11 · published Jun 11, 2001, effective Jul 16, 2001
Boeing Model 737, 747, and 777 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 737, 747, and 777 series airplanes, that requires replacement of the seat track fittings on all passenger seats with new, improved fittings. The actions specified by this AD are intended to prevent unrestrained movement of the passenger seats during high forward deceleration of the airplane, which could result in injury to the passengers or crew members during an emergency landing.
AD 2001-12-01 · published Jun 12, 2001, effective Jun 29, 2001
The New Piper Aircraft, Inc. Models PA-46-310P, PA-46-350P, and PA-46-500TP Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain The New Piper Aircraft, Inc. (Piper) Models PA-46- 310P, PA-46-350P, and PA-46-500TP airplanes. This AD requires you to inspect the left and right inboard flap drive bellcrank assemblies to ensure that the welding is complete and adequate and replace any assembly that has incomplete or inadequate welding. This AD is the result of reports of several instances where the bellcrank in the flap control system failed. The actions specified by this AD are intended to prevent failure of the flap drive bellcrank assemblies caused by incorrect or inadequate welding. Such failure could cause the inability to control the flaps and lead to reduced or loss of control of the airplane.
AD 2001-12-05 · published Jun 12, 2001, effective Jun 27, 2001
Boeing Model 747-100, 747-200, 747-300, and 747SR Series Airplanes Powered by General Electric CF6-45/50 and Pratt & Whitney JT9D-70 Series Engines
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Boeing Model 747-100, 747-200, 747-300, and 747SR series airplanes powered by General Electric CF6-45/50 and Pratt & Whitney JT9D-70 series engines. This action requires a detailed visual inspection of the outboard diagonal brace for heat damage and cracking; and follow-on repetitive inspections or corrective actions, if necessary. This action also provides an optional terminating action for the requirements of this AD. This action is necessary to detect and correct heat damage to the diagonal brace, which could cause cracking or fracture of the diagonal brace, and possible loss of the diagonal brace load path and consequent separation of the strut and engine from the airplane.
AD 2001-12-02 · published Jun 13, 2001, effective Jul 18, 2001
Learjet Model 55 Series Airplanes and Model 60 Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Learjet Model 55 series airplanes and Model 60 airplanes, that requires replacement of the brake valve adjustment screw with a new improved screw, and for certain airplanes, it would also require installation of a new brake valve lever stop. The actions specified by this AD are intended to prevent bottoming of the valve components before contact of the brake valve lever with the stop, which could result in loss of all hydraulic fluid and consequent loss of normal braking. This action is intended to address the identified unsafe condition.
AD 2001-12-03 · published Jun 13, 2001, effective Jul 18, 2001
Boeing Model 767-300 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 767-300 series airplanes, that requires a one-time general visual inspection to find chafing and determine adequate clearance of certain wire bundles in the ceiling panel near the main passenger door, and corrective actions. The actions specified by this AD are intended to prevent damage to the wires in the bundles due to contact between the bundles and the adjacent ceiling support bracket. Such damage could result in electrical arcing, smoke, or fire in the cabin, and failure of certain systems essential to safe flight and landing of the airplane. This action is intended to address the identified unsafe condition.
AD 2001-12-04 · published Jun 13, 2001, effective Jul 18, 2001
Dornier Model 328-300 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Dornier Model 328-300 series airplanes, that requires replacement of the hydraulic line between the main hydraulic pump and the pulsation damper in hydraulic system "B" with a new hydraulic flex hose. This action is necessary to prevent cracking in the hydraulic line (due to a production defect), leading to heavy leakage in hydraulic system "B," which could impair the functioning of the airplane's flaps, roll spoilers, inner ground spoilers, and nose wheel steering. This action is intended to address the identified unsafe condition.
AD 2001-12-08 · published Jun 15, 2001, effective Jul 20, 2001
Boeing Model 767 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 767 series airplanes, that requires removing the two existing escape ropes in the flight compartment; installing new escape ropes, bags, and placards; and replacing the nylon straps with new straps; as applicable. This action is necessary to ensure that flight crew members safely reach the ground from a flight compartment window in the event of an emergency evacuation. This action is intended to address the identified unsafe condition.
AD 2001-12-10 · published Jun 15, 2001, effective Jul 20, 2001
Boeing Model 777-200 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 777-200 series airplanes, that requires repetitive detailed visual and ultrasonic inspections of the lower flange of the flaperon inboard support to find cracking, and corrective actions, if necessary. This AD also requires a modification, which terminates the repetitive inspections. The actions specified by this AD are intended to prevent fracture of the inboard support structure, which could result in an in-flight loss of the inboard flaperon, structural damage, and consequent reduced controllability of the airplane.
AD 2001-12-12 · published Jun 18, 2001, effective Jul 23, 2001
Construcciones Aeronauticas, S.A. (CASA) Model CN-235 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain CASA Model CN-235 series airplanes, that requires installation of fuselage skin reinforcements in the right and left zones of the fuselage between stations 11232 and 11740 and stringers P7 and P9. The actions specified by this AD are intended to prevent premature fatigue cracking of the fuselage, which could result in reduced structural integrity of the airplane. This action is intended to address the identified unsafe condition.
AD 2001-12-13 · published Jun 18, 2001, effective Jul 23, 2001
Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and EMB-145 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain EMBRAER Model EMB-135 and EMB'145 series airplanes, that requires replacement of certain brake control units (BCU) with new units. The actions specified by this AD are intended to prevent uncommanded application of 50 percent braking in one pair of wheels, which could result in the airplane skidding off the runway. This action is intended to address the identified unsafe condition.
AD 2001-12-09 · published Jun 19, 2001, effective Jul 24, 2001
Dassault Model Mystere-Falcon 900 and Falcon 900EX Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Dassault Model Mystere-Falcon 900 and Falcon 900EX series airplanes, that requires replacement of the protective screens of the underfloor structure boxes at frame 25. This amendment is necessary to prevent water from collecting and freezing in the structure boxes at frame 25, which could result in jamming of the flight controls and consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
AD 2001-12-11 · published Jun 19, 2001, effective Jul 24, 2001
Bombardier Model DHC-7 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Bombardier Model DHC-7 series airplanes, that requires modification of the pressure hoses to the ground spoiler actuators. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent blockage of pressure hoses to the ground spoiler actuators, leading to uncommanded deployment of the ground spoilers, resulting in reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
AD 2001-12-14 · published Jun 20, 2001, effective Jul 25, 2001
Boeing Model 747-400 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747-400 series airplanes, that requires an inspection to detect miswiring of diodes in the heating system of the pitot static probes, and corrective action, if necessary. The actions specified by this AD are intended to prevent reduced power to the heating system of the pitot static probes, leading to ice accumulation on the pitot static probes, which could result in erroneous airspeed or altitude indications to the flight crew, and consequent reduced operational safety in all phases of flight. This action is intended to address the identified unsafe condition.
AD 2001-12-15 · published Jun 20, 2001, effective Jul 25, 2001
McDonnell Douglas Model MD-90-30 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model MD-90-30 series airplanes, that requires revising the wiring of the selective calling (SELCAL) system. The actions specified by this AD are intended to prevent inadvertent very high frequency transmissions and subsequent loss of radio communications for airplane and/or airport operations; and to prevent inadvertent high frequency transmissions and subsequent electrical shock to ground service personnel and/or damage to the airplane during fueling operations or fuel tank maintenance. This action is intended to address the identified unsafe condition.
AD 2001-12-17 · published Jun 20, 2001, effective Jul 25, 2001
Raytheon Model Hawker 800XP Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Raytheon Model Hawker 800XP series airplanes, that requires an inspection to confirm the installation of rivets at fuselage stations 251.975, 262.35, 272.725, and 283.10, and installation of new rivets, if necessary. The actions specified by this AD are intended to detect and correct fatigue cracking of the fuselage skin, and consequent loss of cabin pressurization. This action is intended to address the identified unsafe condition.
AD 2001-12-18 · published Jun 20, 2001, effective Jul 25, 2001
Construcciones Aeronauticas, S.A. (CASA), Model CN-235 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain CASA Model CN- 235 series airplanes, that requires modification of the rigging of the engine control cable assembly and replacement of either the entire engine control cable assembly or a segment of the control cables. This amendment is prompted by issuance of mandatory continuing airworthiness information issued by a foreign airworthiness authority. The actions specified by this AD are intended to prevent fatigue of the engine control cables, leading to breakage of the cables, which could result in reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
AD 2001-12-21 · published Jun 21, 2001, effective Jul 26, 2001
Boeing Model 747 Series Airplanes
This amendment supersedes an existing airworthiness directive (AD), applicable to all Boeing Model 747 series airplanes, that currently requires revising the Airplane Flight Manual to include procedures to prevent dry operation of the center wing fuel tank override/jettison pumps and, for certain airplanes, to prohibit operation of the horizontal stabilizer tank transfer pumps in-flight. For certain airplanes, this amendment requires installation of improved fuel pumps, which terminates the requirements of the existing AD. This amendment is prompted by new information received from the fuel pump manufacturer. The actions specified by this AD are intended to prevent contact between the rotating paddle wheel and the stationary end plates within the center wing tank override/jettison fuel pumps or horizontal stabilizer tank transfer pumps, which could cause sparks and/or a hot surface condition and consequent ignition of fuel vapor in the center wing tank or horizontal stabilizer tank during dry pump operation (no fuel flowing).
AD 2001-12-24 · published Jun 21, 2001, effective Jul 26, 2001
Bombardier Model CL-600-2B19 Series Airplanes
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Bombardier Model CL-600-2B19 series airplanes, that currently requires repetitive ultrasonic inspection to detect damage of the actuator lugs of the flight spoiler center hinge; and corrective action, if necessary. This amendment mandates the previously optional terminating action by requiring replacement of the flight spoilers with new improved spoilers. The actions specified by this AD are intended to prevent uncommanded deployment of a flight spoiler, which could result in reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
AD 2001-12-22 · published Jun 22, 2001, effective Jul 27, 2001
McDonnell Douglas Model DC-9-81, -82, -83, and -87 Series Airplanes, and MD-88 Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-9-81, -82, -83, and - 87 series airplanes, and MD-88 airplanes, that requires revising the wiring of the selective calling (SELCAL) system. The actions specified by this AD are intended to prevent inadvertent very high frequency transmissions and subsequent loss of radio communications for airplane and/or airport operations; and to prevent inadvertent high frequency transmissions and subsequent electrical shock to ground service personnel and/or damage to the airplane during fueling operations or fuel tank maintenance. This action is intended to address the identified unsafe condition.
AD 2001-12-23 · published Jun 22, 2001, effective Jul 27, 2001
Boeing Model 747-100, 747-200, 747-300, 747SP, and 747SR Series Airplanes Powered by Pratt & Whitney JT9D-3 and JT9D-7 Series Engines
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Boeing Model 747-100, 747-200, 747-300, 747SP, and 747SR series airplanes powered by Pratt & Whitney JT9D-3 or JT9D-7 series engines, that currently requires inspections of the vertical chords of the aft torque bulkhead of the outboard nacelle struts, and corrective action, if necessary. That AD also gives an optional modification of the vertical chords, which ends the inspections. This amendment requires the previously optional modification. The actions specified by this AD are intended to prevent cracking of the vertical chords adjacent to the lower spar fitting, which could result in separation of the diagonal brace load path. Continued operation with a separated diagonal brace load path increases loads on the upper link, midspar fitting, and dual side links, which could result in separation of the strut and engine from the airplane.
AD 2001-12-51 · published Jun 27, 2001, effective Jul 2, 2001
Boeing Model 737-800 Series Airplanes
This document publishes in the Federal Register an amendment adopting airworthiness directive (AD) 2001-12-51 that was sent previously to all known U.S. owners and operators of all Boeing Model 737-800 series airplanes by individual notices. This AD requires revising the Airplane Flight Manual (AFM) to prohibit operating the airplane at speeds in excess of 300 knots indicated airspeed (KIAS) with speedbrakes extended. This AD also provides for optional terminating action for the AFM revision. This action is prompted by a report indicating that severe vibration of the horizontal stabilizer occurred on a Boeing Model 737-800 series airplane. The actions specified by this AD are intended to prevent severe vibration of the elevator and elevator tab assembly following deployment of the speedbrakes, which, if not corrected, could result in severe damage to the horizontal stabilizer, followed by loss of controllability of the airplane.
AD 2001-13-05 · published Jun 27, 2001, effective Aug 1, 2001
Raytheon Model BAe.125 Series 800A (C-29A and U-125 Military), 1000A, and 1000B Airplanes; Hawker 800 (U-125A Military) Airplanes; and Hawker 800XP and 1000 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Raytheon Model BAe.125 series 800A (C-29A and U- 125 military), 1000A, and 1000B airplanes; Hawker 800 (U-125A military) airplanes; and Hawker 800XP and 1000 series airplanes, that requires removal of existing clamps, bedding tapes, and rubber connecting sleeves at the ends of the turbine air discharge duct and the water separator, and replacement of the clamps and rubber connecting sleeves with new, improved components. This AD also requires, for certain airplanes, removal of aluminum bedding strips that are installed under the existing clamps. The actions specified by this AD are intended to prevent the turbine air discharge duct or water separator outlet duct from disconnecting from the cold air unit turbine or from the water separator, resulting in the loss of air supply to maintain adequate cabin pressure. Loss of adequate cabin pressure at high altitude would require emergency procedures, such as use of oxygen, auxiliary pressurization, or emergency descent.
AD 2001-13-06 · published Jun 27, 2001, effective Aug 1, 2001
Boeing Model 747-100, -200, -300, and 747SP Series Airplanes
This amendment adopts a new airworthiness directive (AD); applicable to certain Boeing Model 747-100, -200, -300, and 747SP series airplanes; that requires certain inspections to find missing and alloy-steel taperlock fasteners (bolts) in the diagonal brace underwing fittings; and corrective actions, if necessary. For airplanes with missing or alloy-steel fasteners, this AD also mandates replacement of certain fasteners with new fasteners, which constitutes terminating action for the repetitive inspections. This action is necessary to prevent loss of the underwing fitting load path due to missing or damaged alloy-steel taperlock fasteners, which could result in separation of the engine and strut from the airplane. This action is intended to address the identified unsafe condition.
AD 2001-13-07 · published Jun 27, 2001, effective Aug 1, 2001
Boeing Model 737-300, 737-400, 737-500, 737-600, 737-700, 737-800, 757-200, 757-200PF, 757-200CB, and 757-300 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 737-300, 737-400, 737-500, 737-600, 737-700, 737-800, 757-200, 757-200PF, 757-200CB, and 757-300 series airplanes. This AD requires a test of the two electrical circuits that close the fuel shutoff valve on the wing spar, and repair, if necessary. This action is necessary to prevent inability to shut off the flow of fuel to an engine after an uncontained engine failure, which could result in a fire spreading to other parts of the airplane. This action is intended to address the identified unsafe condition.
AD 2001-13-08 · published Jun 27, 2001, effective Aug 1, 2001
Dornier Model 328-300 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Dornier Model 328-300 series airplanes, that requires replacing the brake assemblies with modified brake assemblies. The actions specified by this AD are intended to prevent overheating of the brakes, which could result in cracked pistons and consequent leakage and burning of the hydraulic fluid. This action is intended to address the identified unsafe condition.
AD 2001-13-09 · published Jun 27, 2001, effective Aug 1, 2001
Airbus Model A300 B2-1C, B2-203, B2K-3C, B4-2C, B4-103, and B4-203 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to all Airbus Model A300 B2-1C, B2-203, B2K-3C, B4-2C, B4- 103, and B4-203 series airplanes, that requires a one-time inspection of the space between the fuel quantity indication (FQI) probes and any adjacent structures for minimum clearance, and corrective action, if necessary. The actions specified by this AD are intended to prevent the possibility of electrical arcing to the fuel tank if the airplane should be struck by lightning. This action is intended to address the identified unsafe condition.
AD 2001-13-10 · published Jun 27, 2001, effective Aug 1, 2001
Saab Model SAAB 2000 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Saab Model SAAB 2000 series airplanes, that requires testing of certain components of the emergency pitch trim system (EPTS), and corrective action, if necessary. The actions specified by this AD are intended to prevent faulty activation of the emergency pitch trim actuator (EPTA), which could cause damage to the elevator front spar, resulting in reduced structural integrity of the elevator and a non-functioning EPTS. This action is intended to address the identified unsafe condition.
AD 2001-13-11 · published Jun 27, 2001, effective Jul 12, 2001
Dassault Model Falcon 10 Series Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to all Dassault Model Falcon 10 series airplanes. This action requires an inspection to verify proper installation of the pins in the dual non-return valves of the fire extinguishing system for the engines, and replacement of any defective valve with a new valve. This action is necessary to prevent failure of a fire extinguisher bottle to discharge, which could result in the inability to extinguish a fire in an engine. This action is intended to address the identified unsafe condition.
AD 2001-13-13 · published Jun 27, 2001, effective Jul 12, 2001
Airbus Model A330 and A340 Series Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to all Airbus Model A330 and A340 series airplanes. This action requires revising the Airplane Flight Manual to advise the flight crew of appropriate procedures to follow in the event of lost or erroneous airspeed indications. This action is necessary to prevent inadvertent excursions outside the normal flight envelope. This action is intended to address the identified unsafe condition.
AD 2001-13-14 · published Jun 27, 2001, effective Jul 12, 2001
Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-120 Series Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to all EMBRAER Model EMB-120 series airplanes. This action requires revising the Airplane Flight Manual, installing a placard on the main instrument panel, and removing the "LIGHT-HEAVY" inflation switch of the leading edge deicing boots. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. This action is intended to ensure that the flight crew is provided with accurate indications of the severity of ice accretion and appropriate procedures and actions to prevent reduced controllability of the aircraft due to accretion of ice on the airplane.
AD 2000-03-20 R1 · published Jun 29, 2001, effective Aug 3, 2001
Airbus Model A300 B4-601, B4-603, B4-620, B4-605R, B4-622R, and F4-605R (Collectively Called A300-600) Series Airplanes
This amendment revises an existing airworthiness directive (AD), applicable to all Airbus Model A300 B4-601, B4-603, B4-620, B4- 605R, B4-622R, and F4-605R (collectively called A300-600) series airplanes, that currently requires repetitive ultrasonic inspections to detect cracks on the forward fittings in the radius of frame 40 adjacent to the tension bolts in the center section of the wings, and various follow-on actions. That AD was prompted by reports of cracking due to fatigue-related stress in the radius of frame 40 adjacent to the tension bolts at the center/outer wing junction. The actions specified by that AD are intended to detect and correct fatigue cracking on the forward fittings in the radius of frame 40 adjacent to the tension bolts in the center section of the wings, which could result in reduced structural integrity of the wings. This amendment removes airplanes from the applicability of the existing AD.
AD 2001-08-13 · published Jun 29, 2001, effective May 10, 2001
Gulfstream Model G-1159, G-1159A, G-1159B, G-IV, and G-V Series Airplanes
This amendment corrects and clarifies information in an existing airworthiness directive (AD), applicable to certain Gulfstream Model G-1159, G-1159A, G-1159B, G-IV, and G-V series airplanes, that currently requires an inspection to determine if certain door control valves of the landing gear are installed, and modification of the valve, if necessary. The actions specified in that AD are intended to prevent loss of hydraulic system fluid due to failure of the door control valve of the landing gear, which could require the flight crew to use alternate gear extension procedures (landing gear blow down) for landing of all models. This amendment corrects the requirements of the current AD by specifying appropriate alert customer bulletins for certain airplane models, and clarifying the compliance time for the modification of the door control valve of the landing gear. This amendment is prompted by operators' comments on the existing AD.
AD 2001-13-12 · published Jun 29, 2001, effective Aug 3, 2001
Boeing Model 747 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747 series airplanes. This AD requires repetitive inspections to detect cracks and corrosion around the lower bearing of the actuator attach fittings of the inboard and outboard flaps. This AD also requires repetitive overhauls for certain actuator attach fittings or repetitive replacement of the fittings with new fittings, as applicable, which terminates the repetitive inspections. This AD also provides for replacement of actuator attach fittings with improved fittings, which terminates all requirements of this AD. This amendment is prompted by reports of cracks on the lower bearing journal of the inboard actuator attach fittings of the outboard trailing edge flaps due to stress corrosion. The actions specified by this AD are intended to detect and correct cracking on the actuator attach fittings of the trailing edge flaps, which could result in abnormal operation or retraction of a trailing edge flap, and consequent reduced controllability of the airplane.
AD 2001-01-52 R1 · published Jun 20, 2001
Bell Helicopter Textron Canada Model 407 Helicopters
This amendment rescinds an existing airworthiness directive (AD) that applies to Bell Helicopter Textron Canada (BHTC) Model 407 helicopters and currently requires, before further flight, imposing never exceed velocity (Vne) restrictions on the helicopter. The requirements of that AD were intended to prevent tail rotor blades from striking the tailboom, separation of the aft section of the tailboom with the tail rotor gearbox and vertical fin, and subsequent loss of control of the helicopter. That AD was prompted by an accident suspected of being the result of a tail rotor strike caused by high airspeed. Since the issuance of that AD, accident investigation findings have not substantiated that a tail rotor strike caused by high airspeed was the cause of the accident. This amendment rescinds that AD. This amendment is prompted by the FAA's determination that the Vne restrictions and accompanying actions imposed by that AD do not correct an unsafe condition.
AD 2001-12-16 · published Jun 27, 2001, effective Jul 12, 2001
Eurocopter France Model AS332L2 Helicopters
This amendment adopts a new airworthiness directive (AD) for Eurocopter France Model AS332L2 helicopters. This AD requires, at specified time intervals, visually inspecting the main rotor blade sleeve yoke (sleeve) for cracks, corrosion, fretting, or bonding separation; the bearing surface of the metal bushing (bushing) for fretting or cracks; and the sleeve-to-damper attachment bolt (bolt) for corrosion and deterioration of the fluorimid varnish coating. Replacing any cracked or nonairworthy sleeve, bushing, or bolt is also required before further flight. This AD is prompted by the discovery of extensive deterioration of the fluorimid varnish coating on the bolt; cracks in the bushing; and fretting and corrosion of the sleeve. The actions specified in this AD are intended to detect corrosion and cracks in the yoke, which could result in separation of the blade damper assembly and subsequent loss of control of the helicopter.
AD 2001-13-01 · published Jun 27, 2001, effective Aug 1, 2001
Bell Helicopter Textron, Inc. Model 205A-1, 205B, 212, 412, 412EP, and 412CF Helicopters
This amendment adopts a new airworthiness directive (AD), for Bell Helicopter Textron, Inc. (BHTI) Model 205A-1, 205B, 212, 412, 412EP, and 412CF helicopters. This AD requires removing each existing tail rotor counterweight bellcrank (bellcrank) retention nut (retention nut), replacing each retention nut with a zero hours time-in-service (TIS) retention nut; and follow-up inspections of installed retention nuts. This AD is prompted by an in-flight loss of a bellcrank due to failure of the retention nut. The actions specified by this AD are intended to prevent failure of the retention nut, which could result in the bellcrank migrating off the crosshead spindle, loss of tail rotor control, and subsequent loss of control of the helicopter.
AD 2001-13-02 · published Jun 27, 2001, effective Aug 1, 2001
Bell Helicopter Textron Canada Model 407 Helicopters
This amendment adopts a new airworthiness directive (AD) for Bell Helicopter Textron Canada (BHTC) Model 407 helicopters that requires replacing certain cockpit warning horns. This amendment is prompted by reports that pilots have had difficulty in distinguishing between the FADEC Fail horn, the Engine Out horn, and the Low Rotor RPM horn. The actions specified by this AD are intended to assist the pilot in properly identifying a specific cockpit warning horn (horn) and prevent an inappropriate pilot response to a horn, which could cause an engine overspeed and subsequent uncommanded reduction to flight-idle engine power.
AD 2001-13-04 · published Jun 27, 2001, effective Jul 23, 2001
Eurocopter France Model EC 155B Helicopters
This amendment adopts a new airworthiness directive (AD) for Eurocopter France Model EC 155B helicopters. This AD requires, before each takeoff with a cabin sliding door in the open position, visually checking each sliding door to ensure that each door roller is inside its rail. If a roller is outside its rail, before further flight, each roller on each door must be replaced inside its rail. This AD also revises the Limitations section of the Rotorcraft Flight Manual (RFM) by prohibiting the opening and closing of a cabin sliding door in flight. This AD is prompted by the loss of a cabin sliding door in flight. The actions specified by this AD are intended to prevent in- flight loss of a cabin sliding door, impact with the main rotor or fenestron, and subsequent loss of control of the helicopter.
AD 2001-11-05 · published Jun 1, 2001, effective Jun 11, 2001
CFM International (CFMI) CFM56-2, -2B, -3, -5B, -5C and -7B Series Turbofan Engines
This amendment adopts a new airworthiness directive (AD) that is applicable to CFMI CFM56-2, -2B, -3, -5B, -5C and -7B series turbofan engines. This action requires limiting engines with certain No. 4 bearings to one on each airplane, replacement of certain No. 4 bearings, and increased frequency of inspections for magnetic particles until the suspect bearing is replaced. This action is prompted by reports of two bearing failures in the fleet since December 2000. The actions specified in this AD are intended to prevent bearing failures, which could cause an engine failure.
AD 2001-12-06 · published Jun 15, 2001, effective Jul 20, 2001
General Electric Company (GE) CF34-1A, -3A, -3A1, -3A2, -3B, and -3B1 Turbofan Engines
This amendment adopts a new airworthiness directive (AD), that is applicable to GE CF34-1A, -3A, -3A1, -3A2, -3B, and -3B1 turbofan engines with No. 5 bearing rotating air seal part number (P/N) 4019T60G01 installed. This amendment requires initial and repetitive checks of the magnetic chip detector indicators, which are located in the lubrication system for the engine bearings, and installation of an improved No. 5 bearing rotating air seal as a terminating action. This amendment is prompted by a report of the failure of a No. 5 bearing rotating air seal that led to a fire in the cavity of the low pressure turbine (LPT), overtemperature of the LPT turbine disk, and excessive turbine disk growth. The actions specified by this AD are intended to prevent No.5 bearing rotating air seal failures and possible uncontained engine failures.
AD 2001-12-07 · published Jun 15, 2001, effective Jul 2, 2001
General Electric Company CT58 Series and Former Military T58 Series Turboshaft Engines
This amendment adopts a new airworthiness directive (AD) that is applicable to certain General Electric Company (GE) CT58 series and former military T58 series turboshaft engines. This action requires the removal from service of certain fuel flow divider assemblies, and replacement with serviceable parts. This amendment is prompted by reports of large volumes of fuel leakage from end caps on fuel flow divider assemblies. The actions specified in this AD are intended to prevent fuel flow divider assembly fuel leakage, which could cause an engine fire, leading to an in-flight engine shutdown and forced landing.
AD 2001-12-19 · published Jun 21, 2001, effective Jul 26, 2001
Turbomeca S.A. Artouste II and Artouste III Series Turboshaft Engines
This amendment adopts a new airworthiness directive (AD), that is applicable to Turbomeca S.A. Artouste II and Artouste III series turboshaft engines. This amendment requires installation of modification TU 24, TU 167, or TU 164, depending on the specific engine series. These modifications will prevent uncommanded partial closing or total closing of the electrical fuel cock, which will prevent uncommanded in-flight engine shutdown. From the effective date of this AD, and until the modification is installed, this amendment will also limit the duration of the engine operating cycle. This amendment is prompted by reports of unexpected power loss during test flights. The actions specified by this AD are intended to prevent unexpected power loss, which could result in an uncommanded in-flight engine shutdown, autorotation, and forced landing.
AD 2001-12-20 · published Jun 21, 2001, effective Jul 26, 2001
General Electric Company (GE) CF6-50 Turbofan Engines
This amendment adopts a new airworthiness directive (AD) that is applicable to General Electric Company (GE) CF6-50 turbofan engines. This amendment requires removal of old high pressure compressor (HPC) air ducts and mating hardware and replacement with newly designed air ducts and reworked mating hardware. This amendment also requires the repetitive inspection of certain reworked mating hardware. This amendment is prompted by reports of an uncontained low pressure turbine (LPT) disk failure that resulted from an air duct failure that caused a fan mid shaft (FMS) separation. The actions specified by this AD are intended to prevent HPC air duct failures that could result in FMS failures, that in turn could result in rejected takeoffs or uncontained LPT events, and to prevent HPC rear shaft failures that could result in uncontained engine failures.
AD 96-12-07 · published Jun 13, 2001, effective Jul 18, 1996
Teledyne Continental Motors Appliances
This amendment supersedes an existing airworthiness directive (AD), applicable to Teledyne Continental Motors (TCM) (formerly Bendix) S-20, S-1200, D-2000, and D-3000 series magnetos equipped with impulse couplings, that currently requires inspections for wear, and replacement, if necessary, of the impulse coupling assemblies. This amendment requires replacement, if necessary, of worn riveted impulse coupling assemblies with serviceable riveted impulse couplings or snap ring impulse couplings. This amendment is prompted by the availability of an improved design for the impulse coupling assembly. The actions specified by this AD are intended to prevent magneto failure and subsequent engine failure.
