27 Airworthiness Directives: 23 airplane, 3 engine, 1 glider.
AD 95-15-11 · published Sep 5, 1995, effective Sep 5, 1995
BAE Systems (Operations) Limited Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Jetstream Model 4101 airplanes. This action requires a visual inspection of the passenger seat belt assemblies to determine if certain seat belt shackles are installed, and replacement of those shackles with improved ones. This amendment is prompted by reports indicating that certain passenger seat belt shackles have failed. The actions specified in this AD are intended to prevent reduced effectiveness of the passenger safety restraint system during take-off and landing or in an emergency situation, due to failure of the passenger seat belt shackles.
AD 95-17-11 · published Sep 5, 1995, effective Sep 5, 1995
McDonnell Douglas Corporation Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to certain McDonnell Douglas Model MD-11 series airplanes. This action requires an inspection and other specified actions to ensure that the ground stud assemblies at three locations of the airplane are installed properly and torqued to certain specifications, to verify the integrity of the components of the ground stud assemblies, and to detect heat damage in adjacent areas; and correction of any discrepancy. This amendment is prompted by reports indicating that arcing occurred across the pins in the galley external power receptacle due to loose attach hardware on the ground stud. The actions specified in this AD are intended to ensure that the ground stud assemblies are attached correctly so that arcing will not occur. Such arcing, if not corrected, could result in heat damage to adjacent structure and a fire in the forward cargo compartment, the center accessory compartment, or the aft fuselagecompartment.
AD 95-18-02 · published Sep 8, 1995, effective Oct 10, 1995
The Boeing Company Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 757 and 767 series airplanes, that requires replacement of the hydraulic pressure transfer tube of the ram air turbine (RAT) system with a new hose assembly. This amendment is prompted by reports that, during flight tests, the hydraulic pressure transfer tube of the RAT cracked when the RAT was extended on a Model 767 series airplane due to overload of the hydraulic transfer tube. The actions specified by this AD are intended to prevent such overload, which could result in cracking of the hydraulic transfer tube. Such cracking subsequently could lead to the loss of hydraulic fluid of the center system and the inability of the RAT to pressurize the center system; this situation could lead to loss of all hydraulic system power in the event that power is lost in both engines.
AD 95-18-03 · published Sep 8, 1995, effective Oct 10, 1995
The Boeing Company Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 767 series airplanes, that requires modification of the off-wing ramp/slide evacuation systems. This amendment is prompted by reports of punctured tubes on certain BFGoodrich off- wing ramp/slide evacuation systems installed on these airplanes. The actions specified by this AD are intended to prevent such tube punctures, which could delay or impede the evacuation of passengers during an emergency.
AD 95-18-04 · published Sep 8, 1995, effective Oct 10, 1995
Textron Aviation Inc. Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Beech Model 400 and 400A airplanes, that requires modification of the autopilot and rudder boost interlock. This amendment is prompted by a report indicating that the rudder boost system installed on these airplanes does not operate correctly during deployment of a thrust reverser. The actions specified by this AD are intended to prevent incorrect operation of the rudder boost system during deployment of a thrust reverser and to prevent the autopilot from exceeding certain bank angle limits; these conditions could result in reduced controllability of the airplane.
AD 95-17-02 · published Sep 11, 1995, effective Sep 11, 1995
Various Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Fokker Model F28 Mk 0100 series airplanes, that requires the installation of modified Passenger Service Unit (PSU) panel lenses, a one-time installation inspection to detect corrosion or deterioration of the PSU connectors, correction of discrepancies, and application of sealant. This amendment is prompted by reports that "No Smoking" and "Fasten Seat Belt" signs installed in certain overhead PSU's are not readable from passengers' and flight attendants' seats. This amendment is also prompted by reports of smoke in the passenger cabin caused by overheating of the PSU connectors. The actions specified by this AD are intended to ensure that warning signs are readable to passengers and flight attendants, and to eliminate a potential fire hazard.
AD 95-17-14 · published Sep 12, 1995, effective Sep 12, 1995
Bombardier Inc. Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Bombardier Model CL-600-1A11, CL-600-2A12, and CL-600-2B16 series airplanes. This action requires functional testing of the brake of the horizontal stabilizer trim actuator (HSTA); and exercising the pitch trim system, revising the FAA-approved Airplane Flight Manual (AFM), operational testing of the HSTA, and replacing the HSTA or horizontal stabilizer trim control unit, if necessary. This amendment is prompted by reports of overspeed annunciation of the pitch trim due to slippage of the no-back device on the HSTA. The actions specified in this AD are intended to prevent uncommanded movement of the HSTA due to failure of the no-back device on the HSTA to operate properly; this condition could adversely affect the controllability of the airplane.
AD 95-19-04 · published Sep 12, 1995, effective Oct 12, 1995
Learjet Model 35, 35A, 36, 36A, 55, 55B, and 55C Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Learjet Model 35, 35A, 36, 36A, 55, 55B, and 55C airplanes, that requires installation of a placard on the instrument panel in the cockpit to advise the flightcrew that the Omega navigation system may be inoperative at certain engine speeds. This amendment is prompted by reports of loss of certain navigation signals during extended over water operation. The actions specified by this AD are intended to prevent excessive deviation from the intended flight path due to loss of navigation signals, which could result in a potentially low-fuel condition or a traffic conflict.
AD 95-18-08 · published Sep 14, 1995, effective Oct 16, 1995
Airbus Model A300-600 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to all Airbus Model A300-600 series airplanes, that requires repetitive inspections to detect cracks in the bottom skin of the wing in the area of the cut out for the pylon rear attachment fitting, and repair, if necessary. This amendment is prompted by a report indicating that, during full-scale fatigue testing, a crack was found in the bottom skin of the wing at the cut out for the aft pylon attachment fitting due to fatigue-related stress. The actions specified by this AD are intended to prevent such fatigue-related cracking, which could result in reduced structural integrity of the wing.
AD 95-18-10 · published Sep 14, 1995, effective Oct 26, 1995
Viking Air Limited Airplanes
This amendment supersedes Airworthiness Directive (AD) 81-10-11, which currently requires repetitively inspecting the elevator root ribs for cracks on de Havilland DHC-6 series airplanes, and replacing any cracked part. The Federal Aviation Administration's policy on aging commuter-class aircraft is to eliminate, or, in certain instances, reduce the number of certain repetitive short-interval inspections when improved parts or modifications are available. This action requires modifying the elevator root rib as terminating action for the repetitive inspections currently required by AD 81-10-11. The actions specified by this AD are intended to prevent failure of the elevator root rib, which could result in loss of control of the airplane.
AD 95-18-11 · published Sep 14, 1995, effective Oct 26, 1995
Viking Air Limited Airplanes
This amendment supersedes Airworthiness Directive (AD) 73-05-03, which currently requires repetitively inspecting the rear spar cap for cracks on certain de Havilland DHC-6 series airplanes, and replacing any cracked rear spar cap. The Federal Aviation Administration's policy on aging commuter-class aircraft is to eliminate or, in certain instances, reduce the number of certain repetitive short-interval inspections when improved parts or modifications are available. This action requires modifying the wing rear spar support (Modification No. 6/1301) as terminating action for the currently required repetitive inspections. The actions specified by this AD are intended to prevent cracking of the top flange of the wing spar attachment caps, which, if not detected and corrected, could result in loss of control of the airplane.
AD 95-18-12 · published Sep 14, 1995, effective Oct 20, 1995
Mooney Aviation Company Inc Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to Mooney Aircraft Corporation (Mooney) Model M20K airplanes. This action requires inspecting to see if the airplane is equipped with a Gerdes fuel selector valve, part number (P/N) A-2580, and replacing any Gerdes fuel selector valve with an Airight fuel selector valve. Malfunction of a Gerdes fuel selector valve on an affected airplane, where the valve did not allow the operator to select the appropriate fuel tank, prompted this action. The actions specified by this AD are intended to prevent fuel selector valve malfunction, which, if not detected and corrected, will prevent the airplane operator from selecting the appropriate fuel tank, resulting in an unscheduled landing.
AD 95-19-10 · published Sep 14, 1995, effective Sep 29, 1995
The Boeing Company Airplanes
This amendment adopts a new airworthiness directive (AD) that is applicable to all Boeing Model 767 series airplanes. This action requires operators to perform visual inspections of the outer cylinder aft trunnion on the main landing gear to determine if the fillet seal is cracked or missing. This action also requires operators to inspect for evidence of corrosion in this location. Finally, this action prescribes the procedures that operators must follow if corrosion is found. This amendment is prompted by several reports of fractures of the outer cylinder aft trunnion due to stress corrosion cracking. The actions specified in this AD are intended to ensure that corrosion is not present in this location, thereby preventing future failures due to stress corrosion cracking.
AD 95-17-06 · published Sep 15, 1995, effective Sep 25, 1995
Mooney Aviation Company Inc Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to Mooney Aircraft Corporation (Mooney) Model M20K airplanes with a Continental TSIO-520-NB engine installed in accordance with Supplemental Type Certificate (STC) SA5691NM. This action requires repetitively inspecting the exhaust transition tube and turbo mount assembly for cracks, and replacing any part found cracked. A report of a cracked exhaust transition tube that connects the exhaust manifolds to the turbocharger inlet on one of the affected airplanes prompted this action. The actions specified by this AD are intended to prevent exhaust gases from entering the cabin heating system because of a cracked exhaust transition tube, which, if not detected and corrected, could result in hazardous levels of carbon monoxide in the airplane cabin.
AD 95-18-05 · published Sep 15, 1995, effective Sep 26, 1995
Fairchild Aircraft Models SA226-AT and SA226-TC Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Fairchild Aircraft Models SA226-AT and SA226-TC airplanes. This action requires replacing the two lower aluminum cargo door receptacles with steel receptacles. A report of cargo door failure on one of the affected airplanes prompted this action. Fatigue of the two bottom cargo door receptacles caused the bottom third of the cargo door to bend outward and upward, causing damage to the fuselage door frame. The actions specified by this AD are intended to prevent decompression injuries and the cargo door from breaking off and striking the empennage or the elevator, which could cause substantial structural failure and loss of control of the airplane.
AD 95-15-12 · published Sep 19, 1995, effective Sep 19, 1995
British Aerospace Regional Aircraft Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to Jetstream Aircraft Limited (JAL) HP137 Mk1 and Jetstream series 200 airplanes. This action requires incorporating operating limitations that revise the maximum flap operating speed for DOWN flaps to 120 knots indicated airspeed (KIAS), and prohibit extending the flaps beyond the take-off position if ice is visible on the airplane. An incident where an airplane of similar type design to the affected airplanes experienced sudden pitch down because of the accumulation of over one inch of ice prompted the proposed action. The actions specified by this AD are intended to prevent sudden pitch down of the airplane during icing conditions, which could lead to loss of control of the airplane.
AD 95-19-03 · published Sep 20, 1995, effective Oct 5, 1995
Aerospatiale Model ATR 42-300 and 42- 320 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Aerospatiale Model ATR42-300 and -320 series airplanes. This action requires modification of the electrical wire bundle associated with the smoke detection system. This amendment is prompted by a report of a short circuit in this electrical wire bundle, which was caused by chafing of the wire against a smoke detection pipe. The actions specified in this AD are intended to prevent such chafing, which could result in short circuits of the electrical wire bundle and a potential fire hazard.
AD 95-19-08 · published Sep 20, 1995, effective Oct 20, 1995
The Boeing Company Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 727-100 and -200 series airplanes, that requires replacing the attaching nutplates on certain engine nose cowls with washers and self-locking nuts. This amendment is prompted by reports indicating that nose cowls separated (or nearly separated) from the engines of certain airplanes following failure of the engine fan blade and subsequent vibration of the engine, which caused loosening of the attach bolts on the nose cowl of the engine. The actions specified by this AD are intended to prevent the attach bolts from becoming loose, which could result in subsequent separation of the nose cowl from the engine.
AD 95-19-09 · published Sep 20, 1995, effective Oct 5, 1995
McDonnell Douglas Corporation Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-9-80 series airplanes and Model MD-88 airplanes. This action requires an inspection to detect damage, burn marks, or discoloration at certain electrical plugs and receptacles of the sidewall lighting in the passenger cabin, and correction of discrepancies. This action also requires modification of the electrical connectors, which would terminate the inspection requirement. This amendment is prompted by reports of failures of the electrical connectors in the sidewall fluorescent lighting, which resulted in smoke or lighting interruption in the passenger cabin. The actions specified in this AD are intended to prevent failures of the electrical connectors, which could result in poor socket/pin contact, excessive heat, electrical arcing, and subsequently, connector burn through and smoke in the passenger cabin.
AD 95-19-15 · published Sep 20, 1995, effective Nov 17, 1995
American General Aircraft Holding Co., Inc. Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to American General Aircraft Corporation (American General) Models AA-5, AA-5A, AA-5B, and AG-5B airplanes. This action requires inspecting the wing attach shoulder bolts for fretting, scoring, wear, or enlarged or elongated mounting holes (known as damage from hereon), and replacing any damaged parts and repairing any damaged areas; and inspecting the wing spar at the center spar clearance gap for excessive clearance, and shimming the spar if excessive clearance is found. The actions specified by this AD are intended to prevent wing attach shoulder bolt failure, which, if not detected and corrected, could lead to structural damage to the wing/fuselage to the point of failure.
AD 95-19-18 · published Sep 21, 1995
Twin Commander Aircraft Corporation 680, 681, 690, and 695 Series Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Twin Commander Aircraft Corporation (Twin Commander) 680, 681, 690, and 695 series airplanes. This action requires installing a placard warning the pilot to observe turbulent air penetration speeds. Two accidents involving Model 690 airplanes where the affected airplanes encountered turbulence while descending at high speeds prompted this action. The actions specified by this AD are intended to prevent structural damage to the airplane caused by excessive turbulence, which could result in loss of control of the airplane.
AD 95-18-07 · published Sep 28, 1995, effective Oct 30, 1995
Bombardier Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), CL-600-2B16 (CL-601-3A and -3R), and CL-600-2B19 (Regional Jet Series 100) Series Airplanes
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Bombardier Model CL-600-1A11, CL-600-2A12, CL-600-2B16, and CL-600-2B19 series airplanes, that currently requires an inspection to detect cracking in the rudder control quadrant; replacement of any cracked quadrant with a new assembly; and retorquing of the castellated nut, as necessary. This amendment requires a follow- on inspection of certain rudder control quadrants to detect cracks that start at the inside root radius of the spigot; modification of any cracked quadrant; and eventual modification of certain quadrants. This amendment also adds airplanes to the applicability of the existing AD. This amendment is prompted by the development of a modification, which, when installed, will positively address the identified unsafe condition. The actions specified by this AD are intended to prevent loss of rudder control due to stress corrosion of the rudder control quadrant.
AD 95-18-14 · published Sep 6, 1995, effective Sep 21, 1995
General Electric Company CF6 Series Turbofan Engines
This amendment adopts a new airworthiness directive (AD) that is applicable to General Electric Company (GE) CF6 series turbofan engines. This action requires a more detailed fluorescent penetrant inspection process for GE CF6 series high pressure compressor rotor (HPCR) stage 3-9 spools. This amendment is prompted by an uncontained failure of the HPCR stage 3-9 spool attributed to a material defect located in the hub to web transition area of the stage 6 disk. The actions specified in this AD are intended to prevent an uncontained HPCR engine failure, which can result in damage to the aircraft.
AD 95-17-15 · published Sep 8, 1995, effective Oct 10, 1995
General Electric Company CF6 Series Turbofan Engines
This amendment adopts a new airworthiness directive (AD), applicable to General Electric Company (GE) CF6-45/-50 series turbofan engines, that requires an initial and repetitive on-wing visual inspection of the side links of the five-link forward mount assembly for cracks, and replacement of the side links and pylon attachment bolts, and inspection of the fail-safe bolt and platform lug, if the side links are found cracked. This AD also requires a shop-level refurbishment of the side links as a terminating action to the on-wing inspection program. This amendment is prompted by four reports of cracked side links detected during routine engine shop visits. The actions specified by this AD are intended to prevent a side link fracture, which could result in the failure of the second side link, or the forward engine mount pylon attachment bolts, and possible separation of the engine from the aircraft.
AD 95-17-16 · published Sep 8, 1995, effective Nov 7, 1995
General Electric Company Engines
This amendment adopts a new airworthiness directive (AD), applicable to General Electric Company (GE) CF6-80A series turbofan engines, that requires an initial and repetitive on-wing eddy current inspection or an on-wing spot fluorescent penetrant inspection of the compressor rear frame (CRF) midflange for cracks, and replacement, if necessary, with serviceable parts. This amendment also requires removal from service of certain CRF's as a terminating action to the on-wing inspection program. This amendment is prompted by a report of a CRF separation that resulted in a rejected takeoff. The actions specified by this AD are intended to prevent a CRF separation, which could result in a rejected takeoff and damage to the aircraft.
AD 95-18-13 · published Sep 14, 1995, effective Oct 26, 1995
Diamond Aircraft Industries GmbH Gliders
This amendment adopts a new airworthiness directive (AD) that applies to certain HOAC AUSTRIA GmbH (HOAC) HK 36R "Super Dimona" gliders. This action requires inspecting the exhaust system for corrosion, replacing the exhaust system if corrosion is found, and installing a carbon monoxide detector. Reports received by the Federal Aviation Administration (FAA) of severe exhaust system corrosion on the affected gliders, including one of excessive corrosion (rusting through), prompted this action. The actions specified by this AD are intended to prevent carbon monoxide leakage caused by a corroded exhaust system, which, if not detected and corrected, could lead to passenger injuries.
