Results
2024-12-05: The FAA is superseding Airworthiness Directive (AD) 2021-25-12 and AD 2022-11-11, which applied to certain De Havilland Aircraft of Canada Limited Model DHC-8-401 and -402 airplanes. AD 2021-25-12 required repetitive lubrications of the trailing arm of the nose landing gear (NLG). AD 2021-25-12 also required revising the existing maintenance or inspection program to include new and revised airworthiness limitations. AD 2022-11-11 required a modification to the NLG shock strut assembly. This AD continues to require the actions specified in AD 2021-25-12 and AD 2022-11-11 and requires replacement of the pivot pin and tow fitting assembly with a new, improved pivot pin and tow fitting assembly and prohibits the installation of affected parts. This AD was prompted by a determination that the pivot pin and tow fitting assembly of the NLG must be replaced. The FAA is issuing this AD to address the unsafe condition on these products.
99-19-25: This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A340 series airplanes. This action requires a one-time inspection of all gland nuts supplied with certain shock struts of the center landing gear (CLG) to verify that the gland nuts have the correct thread profile, and replacement of any defective gland nut with a new gland nut. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified in this AD are intended to prevent the failure of the CLG, and subsequent damage to the airplane structure or injury to airplane occupants.
2002-25-08: This amendment supersedes three existing airworthiness directives (AD's), that are applicable to GE CF6-45, -50, -80A, -80C2, and -80E1 turbofan engines. Those AD's currently require specific handling of the GE CF6 series high pressure compressor rotor (HPCR) stage 3-9 spools during a fluorescent penetrant inspection process, and initial and repetitive ultrasonic and eddy current inspections of certain HPCR stage 3-9 spools for cracks. This amendment removes the AD that requires special handling of the spools during fluorescent- penetrant inspection, and adjusts and combines the initial and repetitive inspection requirements, currently listed in two AD's, into one AD for the HPCR stage 3-9 spool. This amendment aligns repetitive inspection requirements with the more stringent initial inspection requirements mandated by AD 2000-16-12, Amendment 39-11868 (65 FR 50623, August 21, 2000) and terminates AD 95-18-14, Amendment 39-9361 (60 FR 46216, September 6, 1995) that is no longer necessary. The actions specified by this AD are intended to prevent cracks, which can cause separation of the HPCR stage 3-9 spool and possible uncontained engine failure.
2024-13-01: The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes. This AD was prompted by a report of sparking due to damaged wire insulation in the fueling adapter. This AD requires inspecting the electrical wires attached to the airplane connector located behind the fuel scupper for damage, and all applicable related investigative and corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.
98-09-30: This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A330-301 series airplanes. This action requires a one-time visual inspection to measure clearances between the engine forward feed pipe and shroud sleeve in the engine pylon; and repetitive operational tests for fuel leakage, and replacement of the shroud sleeve with a new improved part, if necessary. This amendment is prompted by the issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified in this AD are intended to prevent fuel from leaking into the pylon primary structure and into the engine nacelle core zone, which could result in a fire in the engine.
96-06-09: This amendment adopts a new airworthiness directive (AD) that is applicable to three Boeing Model 767 series airplanes, serial numbers 26847, 27048, and 27049. This action requires a functional check of the trailing edge flap drive bypass valve, and eventual replacement of the control valve module for the trailing edge flaps with an improved module. This amendment is prompted by reports of failure of the bypass valve motor in the control valve module of the trailing edge flaps due to hydraulic fluid contamination. The actions specified in this AD are intended to prevent such failure, which could result in loss of shutdown protection for the trailing edge flap drive; this condition could result in reduced controllability of the airplane in the event of uncommanded or asymmetrical flap motion.
2024-12-03: The FAA is adopting a new airworthiness directive (AD) for certain CFE Company (CFE) Model CFE738-1-1B engines. This AD was prompted by a manufacturer investigation that revealed certain high- pressure turbine (HPT) stage 1 and stage 2 disks were manufactured from powder metal material suspected to contain iron inclusion. This AD requires replacement of affected HPT stage 1 and stage 2 disks with parts eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.
2024-10-08: The FAA is adopting a new airworthiness directive (AD) for all Leonardo S.p.a. Model AW189 helicopters. This AD was prompted by a report of abnormal oscillatory behavior during automated glide slope approaches, due to sealant on the glide slope (G/S) antenna coaxial connectors. This AD requires visually inspecting certain G/S antennas and G/S antenna coaxial connectors for the presence of any sealant; cleaning parts and removing any sealant; performing an external G/S acceptance test procedure (ATP); and taking corrective actions if necessary. This AD would also prohibit installing certain G/S antennas and G/S antenna coaxial connecters. These requirements are specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
2002-25-06: This amendment adopts a new airworthiness directive (AD) that is applicable to Rolls-Royce Limited, Aero Division-Bristol, S.N.E.C.M.A. (RR) Olympus 593 Mk. 610-14-28 turbojet engines, installed in BAe/SNIAS Concorde Type 1 airplanes that have been modified in accordance with Airbus Concorde service bulletins No.'s SST 57-078, SST 57-079, SST 57-080, and SST 57-082. This action requires initial and repetitive engine fuel filter inspections and fuel sample analysis. This amendment is prompted by a report of fuel tank liner materials found in and partially through an engine fuel filter. The actions specified in this AD are intended to prevent contamination of any or all of the four airplane engine fuel control units, causing power loss or one or more engines to shutdown.
2002-25-02: This amendment adopts a new airworthiness directive (AD), that is applicable to Honeywell International Inc. (formerly AlliedSignal Inc., Garrett Turbine Engine Company and AiResearch Manufacturing Company of Arizona) TPE331-3, -5, -6, -8, -10, and -11 series turboprop and TSE331-3 series turboshaft engines. This amendment requires removing weld repaired first stage compressor impellers from service. This amendment is prompted by an uncontained TPE331-11U turboprop engine failure and an in-flight shutdown due to the separation of the first stage Ti 6-4 compressor impeller. The actions specified by this AD are intended to prevent uncontained engine failures, in-flight shutdowns, and secondary damage.