Results
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.
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.
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.
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.
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.
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.
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.
2008-07-09: We are adopting a new airworthiness directive (AD) for various transport category airplanes. This AD requires deactivation of Southeast Aero-Tek, Inc., auxiliary fuel tanks. This AD results from fuel system reviews conducted by the manufacturer, which identified potential unsafe conditions for which the manufacturer has not provided corrective actions. We are issuing this AD to prevent the potential of ignition sources inside fuel tanks, which, in combination with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane.
2001-15-29: This amendment supersedes an existing airworthiness directive (AD), applicable to certain Airbus Model A330-301, -321, -322, and -342 series airplanes and certain Airbus Model A340 series airplanes, that currently requires reinforcement of the wing structure at the inboard pylon rear pickup area. This amendment revises the applicability to include additional airplanes. The actions specified by this AD are intended to prevent fatigue cracking of the bottom skin and reinforcing plate of the wing due to bending, which could lead to reduced structural integrity of the airplane wing. This action is intended to address the identified unsafe condition. The incorporation by reference of certain publications listed in the regulations was approved previously by the Director of the Federal Register as of May 14, 2001 (66 FR 21074, April 27, 2001). Comments for inclusion in the rules docket must be received on or before September 4, 2001.
2018-19-02: We are adopting a new airworthiness directive (AD) for certain Airbus Defense and Space S.A. Model C-212-CB, C-212-CC, C-212-CD, C- 212-CE, and C-212-DF airplanes. This AD was prompted by reports of failures of the rudder pedal control system support. This AD requires repetitive detailed visual inspections of the rudder pedal control system support box and shaft and applicable corrective actions. We are issuing this AD to address the unsafe condition on these products.