Results
2021-24-09: The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Canada Limited Model 430 helicopters. This AD was prompted by an in-flight failure of the main rotor (M/R) pitch link clevis (clevis) due to fatigue damage and excessive wear. This AD requires a visual inspection of the M/R clevis, rod end, and a certain part-numbered universal bearing, performing a purge grease, and performing a magnetic particle inspection of each M/R clevis. Depending on the visual inspection and magnetic particle inspection results, this AD requires removing certain parts from service, replacing certain parts, and performing additional actions. This AD also requires recurring inspections of each M/R clevis and each universal bearing. The FAA is issuing this AD to address the unsafe condition on these products.
2002-19-04: This amendment adopts a new airworthiness directive (AD) that applies to certain Raytheon Aircraft Company (Raytheon) Model 390 airplanes. This AD requires you to replace the inboard fuel probe mounting brackets with ones of improved design. This AD is the result of reports of a design problem with the fuel probe assembly brackets. The actions specified by this AD are intended to correct the required air gap clearance between the fuel probe and the adjacent wing fuel tank access panel, which could result in arcing between the two conductive materials in the event of a lightning strike. This could serve as an ignition source inside the fuel tank and result in fire or explosion.
2023-24-04: The FAA is adopting a new airworthiness directive (AD) for all Honeywell International Inc. (Honeywell) Model AS907-1-1A and AS907-2- 1G engines. This AD was prompted by reports of compressor surge, including a dual engine compressor surge, during takeoff climb out through a steep temperature inversion, causing a loss of engine thrust control. This AD requires either the replacement of a certain electronic control unit (ECU) software version installed on AS907-1-1A engines with updated software or the replacement of certain ECUs installed on AS907-1-1A engines with ECUs eligible for installation. This AD also requires the replacement of certain ECUs installed on AS907-2-1G engines. The FAA is issuing this AD to address the unsafe condition on these products.
2002-19-01: This amendment adopts a new airworthiness directive (AD) that applies to all SOCATA--Groupe AEROSPATIALE (Socata) Model TBM 700 airplanes. This AD requires you to perform a test on the flight control system and adjust the control roll stop if jamming occurs during the test. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for France. The actions specified by this AD are intended to prevent the flight control wheels from traveling beyond normal roll control limits, which could result in the control wheel becoming jammed. Such a condition could lead to reduced or loss of control of the airplane.
2002-19-02: This amendment adopts a new airworthiness directive (AD) that is applicable to Turbomeca S.A. Makila Models 1A, 1A1, and 1A2 turboshaft engines with exhaust pipes incorporating modification TU 200A installed. This action requires visual inspections of exhaust pipes for cracks and tears, upon completion of the last flight of each day, and replacement of cracked and torn exhaust pipes before further flight. This action also requires removal from service of modification TU 200A exhaust pipes at the next shop visit or no later than a certain date. This amendment is prompted by several reports of modification TU 200A exhaust pipes cracking at several of the ejector attachment tabs. The actions specified in this AD are intended to prevent the ejector from becoming loose from the exhaust pipe, resulting in damage to the main rotor and tail rotor and loss of helicopter control.
2002-18-03: This amendment adopts a new airworthiness directive (AD), that is applicable to Rolls-Royce plc (RR) Spey 506-14A, 555-15, 555-15H, 555-15N, and 555-15P turbojet engines. This amendment requires replacing certain stage 2 low pressure turbine (LPT) blades with new redesigned stage 2 LPT blades. This amendment is prompted by several reports of failures of stage 2 LPT blades. The actions specified by this AD are intended to prevent failure of the stage 2 LPT blades, which could result in an engine shutdown.
97-09-02 R1: This amendment revises an existing airworthiness directive (AD) that is applicable to CFM International (CFMI) CFM56-5C series turbofan engines. This action establishes new life limits for certain low pressure turbine rotor (LPTR) stage 3 disks and all high pressure turbine rotor (HPTR) disks listed in the existing AD. This amendment is prompted by the results of an extensive life management program performed by the manufacturer. The actions specified in this AD are intended to prevent low-cycle-fatigue (LCF) failure of certain HPTR front shafts, HPTR front air seals, HPTR disks, booster spools, and LPTR stage 3 disks, which could result in an uncontained engine failure and damage to the airplane.
2023-23-14: The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 747 airplanes. This AD was prompted by reports of latent failures of the lightning protection features for the engine fuel feed system. This AD requires an inspection for damage and a measurement of the electrical bonding resistance of the out-tank fuel feed tube bonding jumper in the strut for each of the four engines, a measurement of the electrical bonding resistance of the forward side of the front spar bulkhead fitting adapter for each of the four engines, and applicable related investigative and corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.
2000-22-19: This amendment supersedes an existing airworthiness directive (AD) that applies to Eurocopter France Model SA330F, G, and J helicopters and requires inspecting the tail rotor blade (blade) skin for cracks and replacing, as necessary, the blade. This amendment requires skin bonding and eddy current inspections of the blade skin for cracks and would reference a more recent service bulletin (SB). This amendment is prompted by improved inspection methods and by the manufacturer revising the SB referenced in the current AD. The actions specified by this AD are intended to prevent fatigue cracking of a blade, failure of a blade, and subsequent loss of control of the helicopter.
95-08-14: This amendment adopts a new airworthiness directive (AD) that is applicable to AlliedSignal, Inc. (formerly Textron Lycoming) LTS101 series turboshaft engines. This action requires a one-time replacement of magnetic speed pickups in the engine electronic overspeed protection system, or inspection, and replacement, if necessary, of pickups with incorrect polarity. This amendment is prompted by reports of a manufacturing error that resulted in improper sensor polarity of magnetic speed pickups. The actions specified in this AD are intended to prevent the engine electronic overspeed protection system from failing to function as designed, which can result in the inability to arrest an uncontrolled power turbine (PT) rotor overspeed and damage to the aircraft.