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2001-15-27: This amendment adopts a new airworthiness directive (AD) that is applicable to certain Israel Aircraft Industries, Ltd., Model 1125 Westwind Astra series airplanes. This action requires replacing certain fuel-immersed electrical harnesses in the fuel tank with modified harnesses. This action is necessary to prevent electrical arcing in the area of fuel vapors, which could result in a potential explosion and/or fire in the fuel tank. This action is intended to address the identified unsafe condition.
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95-04-04: This amendment adopts a new airworthiness directive (AD), applicable to certain British Aerospace Model Avro 146-RJ70A and -RJ85A series airplanes, that requires an inspection to identify and remove certain cable terminals on the auxiliary power unit (APU) starter circuit and installation of certain new cable terminals. This amendment is prompted by a report that, during an inspection of the cable terminals on the APU starter circuit, incorrect cable terminals were found installed on these airplanes. The actions specified by this AD are intended to ensure the installation of correct starter cable terminals in the APU; incorrect cables could lead to the inability of the pilot to start the APU when needed in a situation of loss of other electrical power sources.
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2008-07-10: The FAA is adopting a new airworthiness directive (AD) for certain Hawker Beechcraft Corporation (HBC) Models B200, B200GT, B300, and B300C airplanes. This AD requires you to fabricate and install a placard incorporating information that limits operation when there is known or forecast icing and requires you to replace a section of the pneumatic supply tube for the tail deice system with a new tube of a different material. This AD results from reports of collapsed tail deice boot pneumatic supply tubes. We are issuing this AD to prevent collapsed pneumatic supply tubes, which could result in failure of the tail deice boots to operate. This failure could lead to loss of control in icing conditions.
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2001-24-34: This amendment supersedes an existing airworthiness directive (AD), applicable to all McDonnell Douglas Model DC-8-70 series airplanes, that currently requires repetitive inspections and repair or replacement, if necessary, of the generator power feeder cables, supporting brackets, and clamps at all the engine pylons. This amendment requires accomplishment of a terminating action for the repetitive inspections. This amendment also requires replacement of the support clamps of the generator power feeder cable on engine nacelles/ pylons 1, 2, 3, and 4 with new support clamps. This amendment is prompted by the FAA's determination that further rulemaking is necessary. The actions specified by this AD are intended to prevent a fire on the ground if a fuel leak exists in an engine pylon.
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2021-10-26: The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-100-1A10 airplanes. This AD was prompted by reports of DC motor pump (DCMP) failures during production flight tests. This AD requires installing a redesigned DCMP electric motor assembly. The FAA is issuing this AD to address the unsafe condition on these products.
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95-03-15: This amendment adopts a new airworthiness directive (AD), applicable to Textron Lycoming ALF502R series turbofan engines, that reduces the service life for the No. 2 stage turbine disk, reduces the service lives for No. 1 and No. 3 through No. 7 stage compressor rotor disks, and requires a scheduled removal of these disks from service. This amendment is prompted by reports of cracks in disks returned from the field and in disks tested by the manufacturer. The actions specified by this AD are intended to prevent disk failure resulting in a possible uncontained engine failure.
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2008-07-11: We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. This AD requires inserting changes into the airworthiness limitations of the FAA-approved maintenance program. We are issuing this AD to require actions to correct the unsafe condition on these products.
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2001-15-20: This amendment adopts a new airworthiness directive (AD), applicable to all Fokker Model F.28 Mark 1000, 2000, 3000, and 4000 series airplanes, that requires a one-time inspection to detect the presence of filler plates of the engine support fittings, and corrective action, if necessary. The actions specified by this AD are intended to detect and correct fatigue and stress corrosion in the U-shaped upper and lower legs of the engine support fittings, which could result in reduced structural integrity of the engine support structure. This action is intended to address the identified unsafe condition.
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2020-11-12: The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-8 and 737-9 airplanes. This AD was prompted by a report that certain exterior fairing panels on the top of the engine nacelle and strut (the thumbnail fairing and mid strut fairing panels) may not have the quality of electrical bonding necessary to ensure adequate shielding of the underlying wiring from the electromagnetic effects of high intensity radiated fields (HIRF), which could potentially lead to a dual-engine power loss event and/or display of hazardously misleading primary propulsion parameters. This AD requires a detailed inspection of the thumbnail fairing panels and mid strut fairing panels for excessive rework of the metallic (aluminum foil) inner surface layer, replacement of any excessively reworked panels, and modification of the thumbnail fairing assembly to ensure adequate bonding. The FAA is issuing this AD to address the unsafe condition on these products.
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95-04-14: This amendment supersedes an existing airworthiness directive (AD), applicable to Robinson Helicopter Company Model R22 helicopters, that currently requires revisions to the Limitations section, the Normal Procedures section, and the Emergency Procedures section of the R22 Rotorcraft Flight Manual, revised February 4, 1993. These revisions limit operations in high winds and turbulence; provide information about main rotor (M/R) stalls and mast bumping; and, provide recommendations for avoiding these situations. Additionally, emergency procedures are provided for use should certain conditions be encountered. This amendment requires the same revisions required by the existing Priority Letter AD, but revises certain words and phrases to further clarify the revised Limitations and Normal Procedures sections, deletes the paragraph that referenced recording compliance with the AD, and adds another paragraph that states that no special flight permits will be issued prior to compliance with this AD. This amendment is prompted by 26 accidents since 1981 that resulted in fatalities and involved the M/R blades contacting the helicopters' fuselage. The actions specified by this AD are intended to prevent M/R stall or mast bumping, which could result in the M/R blades contacting the fuselage causing failure of the M/R system and subsequent loss of control of the helicopter.
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