40 Airworthiness Directives: 25 airplane, 4 rotorcraft, 8 engine, 3 glider.
AD 2000-19-09 · published Oct 2, 2000, effective Oct 17, 2000
Boeing Model 767 Series Airplanes Powered by Rolls-Royce RB211 Series Engines
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Boeing Model 767 series airplanes powered by Rolls-Royce RB211 series engines. This action requires modification of the nacelle strut and wing structure. This action is necessary to prevent fatigue cracking in primary strut structure and consequent reduced structural integrity of the strut. This action is intended to address the identified unsafe condition.
AD 2000-20-04 · published Oct 6, 2000, effective Nov 13, 2000
McDonnell Douglas Model MD-90-30 Series Airplanes
This document supersedes an existing airworthiness directive (AD) that applies to certain McDonnell Douglas Model MD-90-30 series airplanes. That AD currently requires replacement of certain ground block screws with new screws; and retermination of the circuit ground wires of the electrical power control unit (EPCU) to separate grounding points. The actions specified in that AD are intended to prevent a loose electrical ground block of the circuit ground wires of the EPCU, which could result in complete loss of the primary electrical power of an airplane during flight. This amendment is prompted by the Federal Aviation Administration's determination that the existing AD must be revised to ensure that the requirements apply to the appropriate airplane groups.
AD 2000-20-05 · published Oct 6, 2000, effective Nov 13, 2000
Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-120 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain EMBRAER Model EMB-120 series airplanes, that requires revising the Airplane Flight Manual (AFM), and either installing hydraulic tube assemblies incorporating a check valve, or visually inspecting the check valve if already installed and corrective action, if necessary. 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 the landing gear doors from becoming blocked from opening during application of emergency procedures in the event of a loss of hydraulics.
AD 2000-20-07 · published Oct 6, 2000, effective Nov 22, 2000
Raytheon Aircraft Company Beech Models 1900, 1900C, and 1900D Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Raytheon Aircraft Company (Raytheon) Beech Models 1900, 1900C, and 1900D airplanes. This AD requires you to modify the cockpit voice recorder (CVR) system. This AD is the result of instances where the recording quality of the CVR in the affected airplanes was so poor that the information was practically unrecoverable. The actions specified by this AD are intended to correct substandard quality cockpit voice recordings caused by the configuration of the present CVR system, which could affect air safety if important information that the CVR provides is not available after an accident. This information helps determine the probable cause of an accident and aids in developing necessary corrective action or design changes to prevent future accidents.
AD 2000-20-08 · published Oct 6, 2000, effective Nov 13, 2000
McDonnell Douglas Model DC-8 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-8 series airplanes, that requires, for certain airplanes, inspection(s) to detect cracks of the doorjamb corners and follow-on actions. For certain other airplanes, this AD requires installation of a preventative modification; an inspection to detect cracks at the corners of the doorjambs of the passenger and service doors; and follow-on actions. This amendment is prompted by reports indicating that fatigue cracks were found in the fuselage skin and doublers at the corners of the doorjambs of the passenger and service doors. The actions specified by this AD are intended to detect and correct such fatigue cracking, which could result in rapid decompression of the fuselage and consequent reduced structural integrity of the airplane.
AD 2000-20-09 · published Oct 6, 2000, effective Nov 13, 2000
Boeing Model 757 Series Airplanes Powered by Pratt & Whitney Engines
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 757 series airplanes, that requires modification of the nacelle strut and wing structure. This amendment is prompted by reports indicating that the actual operational loads applied to the nacelle are higher than the analytical loads that were used during the initial design. Such an increase in loading can lead to fatigue cracking in primary strut structure prior to an airplane reaching its design service objective. The actions specified by this AD are intended to prevent fatigue cracking in primary strut structure and consequent reduced structural integrity of the strut.
AD 2000-20-15 · published Oct 11, 2000, effective Nov 15, 2000
Airbus Model A300 and A300-600 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A300 and A300-600 series airplanes, that requires a high frequency eddy current (HFEC) inspection to detect cracking of the rear fittings of fuselage frame FR40 at stringer 27, and repetitive inspections or repair, as applicable. In lieu of accomplishing the repetitive inspections, this amendment requires a modification that would allow the inspection to be deferred for a certain period of time. 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 detect and correct fatigue cracking of the rear fittings of fuselage frame FR40 at stringer 27, which could result in reduced structural integrity of the airplane.
AD 2000-20-16 · published Oct 11, 2000, effective Oct 26, 2000
Boeing Model 757-200 Series Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Boeing Model 757-200 series airplanes. This action requires repetitive inspections of the cargo loader system in the forward and aft cargo compartments to detect discrepancies, and corrective actions, if necessary. This action is necessary to detect and correct such discrepancies, which could result in reduced structural integrity of the fuselage and consequent cabin depressurization.
AD 2000-20-13 · published Oct 13, 2000, effective Nov 27, 2000
British Aerospace HP137 Mk1, Jetstream Series 200, and Jetstream Models 3101 and 3201 Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain British Aerospace HP137 Mk1, Jetstream series 200, and Jetstream Models 3101 and 3201 airplanes. This AD requires you to inspect the rudder quadrant support structure for cracks and correct D- washer installation; and also requires you to replace any cracked component and replace any incorrectly installed D-washers. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the United Kingdom. The actions specified by this AD are intended to detect, correct, and prevent further cracking in the rudder quadrant structure caused by incorrectly installed D-washers. Cracks in this structure could result in loss of rudder control with consequent airplane control problems.
AD 2000-20-14 · published Oct 13, 2000, effective Nov 28, 2000
Raytheon Aircraft Company Beech Models A36 and B36TC Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Raytheon Aircraft Corporation (Raytheon) Beech Models A36 and B36TC airplanes. This AD requires you to inspect for the installation of firewall sealant and install firewall sealant if not present. This AD is the result of a report that firewall sealant was not found during a routine production inspection. The actions specified by this AD are intended to correct the absence of sealant and prevent the consequent entry of smoke or fire into the flight compartment or cabin in the event of an engine compartment fire.
AD 2000-20-03 R1 · published Oct 16, 2000, effective Oct 2, 2000
Bombardier Model CL-600-2B19 Series Airplanes
This amendment revises an existing airworthiness directive (AD), applicable to certain Bombardier Model CL-600-2B19 series airplanes, that currently requires installation of shields for the aileron quadrants in the wheel bay of the main landing gear (MLG). This amendment revises the compliance time for the requirements of that AD. The actions specified in this AD are intended to prevent accumulation of water, ice, or slush on the aileron quadrants and control cable pulleys in the wheel bay of the MLG, which could freeze and result in reduced controllability of the airplane.
AD 2000-20-20 · published Oct 18, 2000, effective Nov 22, 2000
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 removal of existing inertial reference units (IRU) and installation of modified IRU's. This amendment is prompted by a report of the failure of the left and center IRU's on a single flight. The actions specified by this AD are intended to prevent loss of multiple IRU's in flight, which could result in the loss of navigation data during flight. This could compromise the ability of the flight crew to maintain the safe flight and landing of the airplane.
AD 2000-21-01 · published Oct 20, 2000, effective Nov 24, 2000
Lockheed Model L-1011-385 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to all Lockheed Model L-1011-385 series airplanes, that requires repetitive inspections to detect corrosion or fatigue cracking of certain structural elements of the airplane; corrective action, if necessary; and incorporation of certain structural modifications. This amendment is prompted by new recommendations related to incidents of fatigue cracking and corrosion in transport category airplanes that are approaching or have exceeded their economic design goal. The actions specified by this AD are intended to prevent corrosion or fatigue cracking of certain structural elements, which could result in reduced structural integrity of the airplane.
AD 2000-21-02 · published Oct 20, 2000, effective Nov 24, 2000
Airbus Model A330 and A340 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A330 and A340 series airplanes, that requires revising the Airplane Flight Manual to include new flight operational procedures for the fuel system; repetitive inspections of the trim transfer fuel line in the vicinity of the aft pressure bulkhead located between frame (FR) 77 and FR86 to detect any discrepancy; and corrective actions, if necessary. This amendment also requires modification of the air release valve in the fuel trim tank transfer system, which constitutes terminating action for the requirements of this AD. 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 damage to the fuel trim transfer system, which could cause rupture of the trim transfer fuel line due to pressure build-up, and result in fuel leakage from that fuel line. This action is intended to address the identified unsafe condition.
AD 2000-21-03 · published Oct 20, 2000, effective Nov 24, 2000
Israel Aircraft Industries, Ltd., Model Astra SPX and 1125 Westwind Astra Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Israel Aircraft Industries, Ltd., Model Astra SPX and 1125 Westwind Astra series airplanes, that requires a one-time inspection of the position of the aileron autopilot servo and attachment arm; follow-on actions; and corrective actions, if necessary; and installation of a stopper angle on the servo bracket. This action is necessary to prevent the control link of the aileron autopilot servo from being driven overcenter, which could result in roll oscillations when the autopilot is engaged. This action is intended to address the identified unsafe condition.
AD 2000-21-04 · published Oct 20, 2000, effective Nov 24, 2000
Boeing Model 767 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 767 series airplanes, that requires installation of sleeving on the 90-minute auxiliary power unit (APU) standby power feeder cable at body station 1351. This amendment is prompted by a report of damage to the 90-minute APU standby power feeder cable caused by shifting of unrestrained cargo containers during flight. The actions specified by this AD are intended to prevent damage to the 90-minute APU standby power feeder cable, which could result in arcing between the standby power feeder cable and the shroud of the APU fuel line, penetration of the fuel line shroud, and a consequent fire in the main deck floor above the aft cargo compartment.
AD 2000-21-05 · published Oct 20, 2000, effective Nov 6, 2000
British Aerospace BAe Model ATP Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to all British Aerospace BAe Model ATP airplanes. This action requires repetitive inspections to detect damage of the torque link apex joint of the left-and right-hand main landing gear (MLG); and replacement of nuts, pins, and bolts with new parts, if necessary. This action is necessary to prevent separation of the top and bottom torque links, and consequent loss of directional control of the MLG. This action is intended to address the identified unsafe condition.
AD 2000-21-06 · published Oct 20, 2000, effective Nov 24, 2000
Boeing Model 747 Series Airplanes Equipped with Pratt & Whitney (PW) JT9D-7Q and JT9D-7Q3 Turbofan Engines
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747 series airplanes, that requires a detailed visual inspection to detect evidence of wear or contact between the precooler support fitting and link assembly; and rework and reidentification of the fitting. This amendment is prompted by a report of rupturing of a diffuser case on a PW JT9D-7Q engine due to cracking in the outer pressure wall in the rear skirt area. The actions specified by this AD are intended to prevent contact between the precooler support link and the precooler support fitting, which could contribute to an uncontained failure of the diffuser case and damage to the airplane.
AD 2000-21-11 · published Oct 25, 2000, effective Nov 29, 2000
Raytheon Model BH.125, DH.125, and HS.125 Series Airplanes
This amendment supersedes an existing airworthiness directive (AD), applicable to all Raytheon Model DH.125-1A, -3A, and -400A series airplanes, that currently requires a one-time inspection to detect scoring of the upper fuselage skin around the periphery of the cockpit canopy blister interface, and repair, if necessary. This amendment expands the applicability of the existing AD to include additional airplanes, and requires that the actions be accomplished in accordance with revised service information for the newly added airplanes. This amendment is prompted by additional reports indicating that scoring has been detected on the upper fuselage skin around the periphery of the cockpit canopy blister interface. The actions specified by this AD are intended to detect and correct scoring of the upper fuselage skin around the periphery of the cockpit canopy blister interface, which could result in reduced structural integrity of the fuselage, and consequent cabin depressurization.
AD 2000-21-12 · published Oct 25, 2000, effective Nov 29, 2000
Fokker Model F.28 Mark 0100 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to all Fokker Model F.28 Mark 0100 series airplanes, that requires replacement of the anti-skid control boxes with improved units. This action is necessary to prevent electromagnetic interference with the anti-skid control system, which could result in reduced brake pressure during low-speed taxiing, and consequent reduced controllability and performance of the airplane. This action is intended to address the identified unsafe condition.
AD 2000-21-13 · published Oct 25, 2000, effective Nov 29, 2000
Dornier Model 328-300 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to all Dornier Model 328-300 series airplanes, that requires revising the Airplane Flight Manual. This action is necessary to prevent an undetected dragging parking brake, and consequent decreased acceleration during the takeoff roll, increased takeoff distance, and possible runway overrun. This action is intended to address the identified unsafe condition.
AD 2000-22-02 · published Oct 26, 2000, effective Nov 13, 2000
Boeing Model 737 Series Airplanes
This amendment supersedes an existing airworthiness directive (AD), applicable to all Boeing Model 737 series airplanes, that currently requires revising the FAA-approved Airplane Flight Manual (AFM). This new amendment revises the AFM procedure in the existing AD to simplify the instructions for correcting a jammed or restricted flight control condition. This amendment is prompted by an FAA determination that the procedure currently inserted in the AFM by the existing AD is not defined adequately. The actions specified in this AD are intended to ensure that the flight crew is advised of the procedures necessary to address a condition involving a jammed or restricted rudder.
AD 2000-21-14 · published Oct 27, 2000, effective Dec 15, 2000
Pilatus Aircraft Ltd. Models PC-12 and PC-12/45 Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Pilatus Aircraft Ltd. (Pilatus) Models PC-12 and PC- 12/45 airplanes. This AD requires you to perform a one-time inspection for abrasion damage, distortion, and proper clearance of the torque oil-pressure tubes and py pressure pipe, and if necessary, adjust and replace these components. 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 correct abrasive damage from rubbing pipes and consequent loss of engine oil.
AD 2000-22-03 · published Oct 30, 2000, effective Dec 4, 2000
Raytheon Model DH.125, Model HS.125, Model BH.125, Model BAe.125 Series 800A (Including Major Variants C-29A and U1-25), Model Hawker 800, Model Hawker 800XP, and Model Hawker 1000 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Raytheon Model DH.125, Model HS.125, Model BH.125, Model BAe.125 Series 800A, Model Hawker 800, Model Hawker 800XP, and Model Hawker 1000 series airplanes, that requires leak checks and inspections for corrosion of the pitot/static and stall vent drain valves, and replacement of certain components, if necessary. This amendment is prompted by reports of plugged or taped drain valves as well as consequent corrosion of certain drain valves. The actions specified by this AD are intended to prevent erroneous altimeter and airspeed indications due to plugged or taped pitot/static and stall vent drain valves.
AD 2000-22-05 · published Oct 30, 2000, effective Dec 4, 2000
Short Brothers Model SD3-60 SHERPA Series Airplanes
This amendment supersedes an existing airworthiness directive (AD), applicable to all Short Brothers Model SD3-60 SHERPA series airplanes, that currently requires a one-time visual inspection to determine the part number of the power control cable assemblies and pulleys of the engine controls; and replacement of the power control cable assemblies and pulleys (as applicable) with new parts, if necessary. This amendment requires accomplishment of the inspection and replacement in accordance with revised procedures. 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 breakage of the power control cable assemblies due to the inflexible construction of the cable, which could result in loss of engine power and consequent reduced controllability of the airplane.
AD 2000-20-06 · published Oct 2, 2000, effective Oct 17, 2000
Agusta S.p.A. Helicopters
This amendment adopts a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model A109K2 and A109E helicopters. This AD requires replacing a certain main transmission aft support fitting (aft support fitting) with an airworthy aft support fitting within specified time intervals and establishes a retirement life for certain aft support fittings. This AD is prompted by three failures of the engine to main gearbox drive shaft due to fatigue cracks on the aft support fittings. This condition, if not corrected, could result in excessive displacement of the main gearbox, failure of an engine to main gearbox drive shaft, loss of power to the main rotor, and a subsequent forced landing.
AD 2000-20-19 · published Oct 16, 2000, effective Nov 20, 2000
Eurocopter France Model AS-350B, BA, B1, B2, B3, C, D, and D1, and AS-355E, F, F1, F2 and N Helicopters
This amendment supersedes an existing airworthiness directive (AD) for Eurocopter France Model AS-350B, BA, B1, B2, C, D, and D1, and AS-355E, F, F1, and F2 helicopters. That AD currently requires inspections of the main rotor head components, the main gearbox (MGB) suspension bars, and the ground resonance prevention system components. This amendment requires those same inspections, but would also apply to Model AS-350B3 and AS-355N helicopters. This amendment is prompted by the inadvertent omission of those model helicopters from the previous AD. The actions specified by this AD are intended to prevent ground resonance due to reduced structural stiffness, which could lead to failure of a main rotor head or MGB suspension component and subsequent loss of control of the helicopter.
AD 2000-20-17 · published Oct 18, 2000, effective Nov 22, 2000
Eurocopter France Model AS332C, L, and L1 Helicopters
This amendment adopts a new airworthiness directive (AD) for Eurocopter France (ECF) Model AS332C, L, and L1 helicopters. This AD requires inspecting the horizontal stabilizer spar tube (spar tube) for corrosion, hardness, cracks, and scratches, and if necessary, replacing any unairworthy spar tube and bushing with an airworthy spar tube and bushing. This amendment is prompted by the loss of a horizontal stabilizer in flight due to a spar tube failure. The actions specified by this AD are intended to prevent failure of the spar tube, separation of the horizontal stabilizer and impact with the main or tail rotor, and subsequent loss of control of the helicopter.
AD 2000-20-18 · published Oct 18, 2000, effective Nov 22, 2000
Bell Helicopter Textron Canada Model 407 Helicopters
This amendment adopts a new airworthiness directive (AD) for Bell Helicopter Textron Canada (BHTC) Model 407 helicopters. This AD requires inspecting the brackets that attach each horizontal stabilizer slat (slat) to the stabilizer for a crack and replacing the slat assembly if a crack is found. Installing airworthy segmented slat assemblies would be required prior to flight after December 31, 2000 and would constitute terminating action for the requirements of this AD. This amendment is prompted by an incident in which a slat separated from a helicopter. The actions specified by this AD are intended to prevent a slat from separating, impact with a main or tail rotor blade, and subsequent loss of control of the helicopter.
AD 2000-20-01 · published Oct 2, 2000, effective Oct 17, 2000
Turbomeca S.A. Engines
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Turbomeca Arriel 1 series turboshaft engines. This action requires the installation of a chip detector with electronic warning on the rear bearing oil return system. This amendment is prompted by reports of gas generator rear bearing failures. The actions specified in this AD are intended to prevent gas generator rear bearing failure, which could lead to an uncommanded engine shutdown.
AD 2000-20-02 · published Oct 2, 2000, effective Oct 17, 2000
General Electric Company CF6-50 Series Turbofan Engines
This amendment adopts a new airworthiness directive (AD) that is applicable to General Electric Company (GE) CF6-50 series turbofan engines. This action requires inspection of the low pressure turbine nozzle lock assemblies, and replacement of the borescope plug with a new design plug. This amendment is prompted by three uncontained engine failures. The actions specified in this AD are intended to detect loose or missing LPT nozzle lock assembly studs that could lead to failure of the locks and subsequent uncontained failure of the engine.
AD 2000-21-07 · published Oct 24, 2000, effective Apr 23, 2001
Pratt & Whitney Division Engines
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Pratt & Whitney JT8D-200 series turbofan engines, that currently requires revisions to the Time Limits Section (TLS) of the JT8D-200 Turbofan Engine Manual to include required enhanced inspection of selected critical life-limited parts at each piece-part exposure. This AD adds additional critical life-limited parts for enhanced inspection. This proposal is prompted by additional focused inspection procedures that have been developed by the manufacturer. The actions specified by this proposed AD are intended to prevent critical life-limited rotating engine part failure, which could result in an uncontained engine failure and damage to the airplane.
AD 2000-21-08 · published Oct 24, 2000, effective Apr 23, 2001
Pratt & Whitney JT8D Series Turbofan Engines
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Pratt & Whitney JT8D series turbofan engines, that currently requires revisions to the Time Limits Section (TLS) of the JT8D Turbofan Engine Manual to include required enhanced inspection of selected critical life-limited parts at each piece-part exposure. This action adds additional critical life-limited parts for enhanced inspection. This amendment is prompted by focused inspection procedures that have been developed by the manufacturer for additional critical life-limited parts. The actions specified by this AD are intended to prevent critical life-limited rotating engine part failure, which could result in an uncontained engine failure and damage to the airplane.
AD 2000-21-09 · published Oct 24, 2000, effective Jan 22, 2001
Pratt & Whitney PW2000 Series Turbofan Engines
This amendment adopts a new airworthiness directive (AD), applicable to Pratt & Whitney (PW) PW2000 series turbofan engines, that requires revisions to the time limit sections (TLS) of the manufacturer's Engine Manuals to include enhanced inspection of selected critical life-limited parts at each piece-part exposure. This action adds additional critical life-limited parts for enhanced inspection. This amendment is prompted by additional focused inspection procedures for other critical life-limited rotating engine parts that have been developed by the manufacturer. The actions specified in the AD are intended to prevent critical life-limited rotating engine part failure, which could result in an uncontained engine failure and damage to the airplane.
AD 2000-21-10 · published Oct 24, 2000, effective Nov 8, 2000
CFE Company CFE738-1-1B Turbofan Engines
This amendment adopts a new airworthiness directive (AD) that is applicable to CFE Company CFE738-1-1B turbofan engines. This action requires removing certain support assemblies and replacing them with support assemblies that have a new design. This amendment is prompted by a report of the loss of seal retention that resulted in contact between the seal face and the stage 2 high pressure turbine (HPT) rotor disk, and subsequent wear of the stage 2 HPT rotor disk. That condition resulted in separation of the stage 2 HPT wheel rim, and an uncontained failure of the stage 2 HPT rotor wheel. The actions specified in this AD are intended to prevent the static seal from moving forward, which could result in contact between the seal face and stage 2 HPT rotor, wear, and the possibility of an uncontained failure of the stage 2 HPT rotor.
AD 2000-22-01 · published Oct 25, 2000, effective Nov 9, 2000
Pratt & Whitney PW4000 Series Turbofan Engines
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Pratt & Whitney (PW) PW4000 series turbofan engines that are equipped with the high pressure compressor (HPC) cutback stator (CBS) configuration and that are used on Boeing 747, Boeing 767, and McDonnell Douglas MD-11 series airplanes. This action requires Operators to limit the number of engines with the HPC CBS configuration to one per airplane, and prohibits installation of engines with HPC modules modified after the effective date of this AD to incorporate the HPC CBS configuration. This amendment is prompted by reports of HPC surges in engines that have the HPC CBS configuration. The actions specified in this AD are intended to prevent a multiple- engine power loss due to HPC surges, which could result in engine power loss at a critical phase of flight such as takeoff or climb.
AD 2000-22-06 · published Oct 30, 2000, effective Dec 4, 2000
Pratt & Whitney JT8D Series Turbofan Engines
This amendment adopts a new airworthiness directive (AD), applicable to Pratt & Whitney (PW) JT8D series turbofan engines, that requires inspections of main fuel pump control shafts for excessive spline wear. Additionally, as terminating action to the inspections, this action requires the replacement of the main fuel pump control shaft with parts of improved design, and reworking the main fuel pump impeller, impeller gear train plate assembly, and impeller cover assembly. This amendment is prompted by reports of failed main fuel pump control shafts caused by excessive spline wear. The actions specified by this AD are intended to prevent loss of engine throttle control, uncommanded acceleration, uncommanded deceleration or inflight shutdown, which could result in reduced airplane control during a critical phase of flight.
AD 2000-20-10 · published Oct 13, 2000, effective Nov 27, 2000
DG Flugzeugbau GmbH Model DG-800B Sailplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain DG Flugzeugbau (DG Flugzeugbau) GmbH Model DG 800B sailplanes. This AD requires you to measure and correct improper propeller drive belt tension. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the Federal Republic of Germany. The actions specified in this AD are intended to correct improper drive belt tension and consequent engine crankshaft or connecting rod bearing damage. Such damage could result in loss of propulsion during critical phases of flight.
AD 2000-20-11 · published Oct 13, 2000, effective Nov 27, 2000
LET Aeronautical Works Model L-13 “Blanik” Sailplanes
This amendment adopts a new airworthiness directive (AD) that applies to all LET Aeronautical Works (LET) Model L-13 "Blanik" sailplanes. This AD requires you to inspect the tail-fuselage hinge for strength requirements and damage, and also requires you to replace any hinge with damage or that does not meet strength requirements. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the Czech Republic. The actions specified by this AD are intended to detect and correct any tail-fuselage hinge that is damaged or has inadequate material characteristics. Any tail-fuselage hinge with damage or inadequate material characteristics could fail and result in loss of controlled flight.
AD 2000-20-12 · published Oct 17, 2000, effective Nov 27, 2000
Aerotechnik s.r.o. Model L 13 SEH VIVAT Sailplanes
This amendment adopts a new airworthiness directive (AD) that applies to all Aerotechnik s.r.o. (Aerotechnik) Model L 13 SEH VIVAT sailplanes. This AD requires you to inspect the tail-fuselage hinge for strength requirements and damage, and also requires you to replace any hinge with damage or that does not meet strength requirements. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the Czech Republic. The actions specified by this AD are intended to detect and correct any tail-fuselage hinge that is damaged or has inadequate material characteristics. Any tail-fuselage hinge with damage or inadequate material characteristics could fail and result in loss of controlled flight.
