Results
2002-16-26: This amendment adopts a new airworthiness directive (AD) that is applicable to certain serial numbers (SN's) of Bombardier-Rotax GmbH type 912 F and 914 F series reciprocating engines. This action requires initial and repetitive visual inspections of the engine crankcase for cracks. This amendment is prompted by reports of several instances of engine crankcases found cracked in service. The actions specified in this AD are intended to prevent oil loss caused by cracks in the engine crankcase, which could lead to in-flight failure of the engine and forced landing.
2002-16-20: This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 727 series airplanes that have been converted from a passenger- to a cargo-carrying ("freighter") configuration, that requires require, among other actions, installation of a fail-safe hinge, redesigned main deck cargo door warning and power control systems, and 9g cargo barrier. This amendment is prompted by the FAA's determination that the main deck cargo door hinge is not fail-safe; that certain main deck cargo door control systems do not provide an adequate level of safety; and that the main deck cargo barrier is not structurally adequate during an emergency landing. The actions specified by this AD are intended to prevent structural failure of the main deck cargo door hinge or failure of the cargo door system, which could result in the loss or opening of the cargo door while the airplane is in flight, and consequent rapid decompression of the airplane, including possible loss of flight control or severe structural damage; and to prevent failure of the main deck cargo barrier during an emergency landing, which could injure occupants.
77-21-09: 77-21-09 LOCKHEED-CALIFORNIA COMPANY: Amendment 39-3059. Applies to Model 188A and 188C airplanes, certificated in all categories. Compliance is required within 100 hours additional time in service after the effective date of this AD, unless already accomplished. To prevent possible jamming of the aileron/rudder remove the aileron rudder balance interconnect mechanism, in accordance with instructions given in Lockheed Electra Service Bulletin Alert 88/SB-698, dated September 12, 1977, or later FAA approved revision. This amendment becomes effective November 25, 1977.
2002-16-14: This amendment adopts a new airworthiness directive (AD) that is applicable to certain Bombardier Model CL-600-2B19 series airplanes. This AD requires inspection of certain installed electrical relays to determine whether they have certain manufacturing date codes, and replacement of the electrical relays with those date codes with new relays with different manufacturing date codes. This action is necessary to prevent the failure of an electrical relay due to a defective moving blade assembly, which could result in the inability to generate electrical power from the emergency system, if needed. This action is intended to address the identified unsafe condition.
94-15-13: This amendment supersedes Airworthiness Directive (AD) 92-13-01, which currently requires inspecting the nose landing gear (NLG) drag brace assembly for corrosion on certain Aerostar Aircraft Corporation (Aerostar) PA-60-600 (Aerostar 600) and PA-60-700 (Aerostar 700) series airplanes, and replacing any corroded components. It also requires replacing the existing spring and piston with new corrosion-resistant parts. This action requires replacing the NLG drag link assembly with a new assembly of improved design. The Federal Aviation Administration (FAA) has received several reports of frozen moisture in the cylinder of the over-center release system, which has led to nose gear collapse on airplanes already in compliance with AD 92-13-01. The actions specified by this AD are intended to prevent failure of the NLG caused by frozen moisture in the cylinder, which could lead to nose gear collapse and damage to the airplane.
2023-20-51: The FAA is adopting a new airworthiness directive (AD) for Airbus Helicopters Model AS332C, AS332C1, AS332L, AS332L1, AS332L2, and SA330J helicopters. This AD was prompted by a report of three newly supplied main rotor swashplate bushing retaining plates with oversized internal diameters. This AD requires accomplishing a one-time inspection to measure the internal diameter of affected bushing retaining plates and depending on the results, accomplishing an additional inspection, replacing non-conforming bushing retaining plates, or accomplishing additional corrective action, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA previously sent this AD as an emergency AD to all known U.S. owners and operators of these helicopters. The FAA is issuing this AD to address the unsafe condition on these products.
2002-16-06: This amendment adopts a new airworthiness directive (AD) that is applicable to certain EMBRAER Model EMB-135 and -145 series airplanes. This action requires determining whether a defective auxiliary power unit (APU) exhaust silencer is installed on the airplane; and corrective actions, if necessary. This action is necessary to prevent separation of the aft baffle assembly from the APU exhaust silencer and consequent separation of the assembly from the airplane, which could cause damage to other airplanes during takeoff and landing operations, or injury to people on the ground. This action is intended to address the identified unsafe condition.
2002-21-51: This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2002-21-51, which was sent previously to all known U.S. owners and operators of Eurocopter France (ECF) helicopters by individual letters. This AD requires certain checks of the magnetic chip detector plug (chip detector) for any metal particles and the main gearbox (MGB) oil-sight glass for dark-colored oil. If any of these are present, the AD requires inspecting the lubrication pump (pump) and, if necessary, replacing the MGB and the pump with an airworthy MGB and pump. Also, this AD requires that a different MGB or pump with any time-in-service (TIS) must meet the requirements of this AD before being installed. This AD was prompted by four reports of malfunctions of the MGB pump. The actions specified by this AD are intended to prevent failure of the MGB pump, seizure of the MGB, loss of drive to an engine and main rotor, and subsequent loss of control of the helicopter.
2023-20-01: The FAA is adopting a new airworthiness directive (AD) for certain Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500- 1A11 airplanes. This AD was prompted by a report the engine fire extinguishing control and indication system did not illuminate correctly. This AD requires installing a software update to the integrated cockpit control panel (ICCP) remote data concentrator (RDC), as specified in a Transport Canada AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
2011-04-06: We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: * * * * * The airworthiness limitations applicable to Damage Tolerant Airworthiness Limitation Items (DT ALI) are currently given in Airbus A340 ALI Document reference AI/SE-M4/95A.0051/97, which is approved by the European Aviation Safety Agency (EASA) and referenced in Airbus Airworthiness Limitations Section (ALS) Part 2. The issue 11 of Airbus A340 ALI Document introduces more restrictive maintenance requirements/airworthiness limitations. Failure to comply with this issue 11 constitutes an unsafe condition. This new [EASA] AD retains the requirements of EASA AD 2007- 0158, which is superseded, and requires the implementation of the more restrictive maintenance requirements/airworthiness limitations as specified in Airbus A340 ALI Document AI/SE-M4/95A.0051/97 issue 11. The unsafe condition is fatigue cracking, damage, and corrosion in certain structure, which could result in reduced structural integrity of the airplane. This AD requires actions that are intended to address the unsafe condition described in the MCAI.
2002-16-03: This amendment adopts a new airworthiness directive (AD) that is applicable to all Boeing Model 737-600, -700, -700C, -800, and -900 series airplanes. This action requires determining exposure to runway deicing fluids containing potassium formate, and, for certain airplanes, repetitive inspections of certain electrical connectors in the wheel well of the main landing gear for corrosion, and follow-on actions. This action is necessary to prevent such corrosion, which could result in incorrect functioning of critical airplane systems essential to safe flight and landing of the airplane. This action is intended to address the identified unsafe condition.
97-20-09: This amendment supersedes an existing priority letter airworthiness directive (AD), applicable to Bell-manufactured Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L, and UH-1P helicopters; and Southwest Florida Aviation SW204, SW204HP, and SW205 helicopters, that currently requires modification and inspections of the vertical fin spar. This amendment requires the same modification and inspections required by the existing priority letter AD, but adds the Southwest Florida Aviation Model SW205A-1 and Utah State University UH-1H helicopters to the applicability of this AD. This amendment is prompted by accidents involving in-flight failure of the tailboom vertical fin spar. The actions specified by this AD are intended to prevent in-flight failure of the vertical fin spar and subsequent loss of control of the helicopter.
2002-16-01: This amendment adopts a new airworthiness directive (AD) that is applicable to certain McDonnell Douglas Model DC-8-21, -31, -32, - 33, -41, -42, and -43 airplanes; and certain Model DC-8-50, -60, and - 70 series airplanes; that have been converted from a passenger-to a cargo-carrying ("freighter") configuration. This action requires gaining access to the floor beam attachments to the lower door jamb within the main cargo door area; performing repetitive inspections to detect cracking or damage of such attachments, including splice plates, angles, and clips; and, if necessary, expanding the inspection area and replacing any cracked or damaged part with a new part. This action is necessary to prevent failure of such floor beam attachments during ground or flight operations, which could cause damage to the floor structure and consequent jamming of the flight control cables, and result in loss of controllability of the airplane in flight.
2011-04-07: We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: The flight crew of a F28 Mark 0070 (Fokker 70) aeroplane received a MLG [main landing gear] unsafe message after landing gear down selection during approach. * * * Inspection just after landing revealed a lot of ice near the LH [left-hand] MLG downlock actuator. * * * Based on the quantity and location of the ice, it is considered highly likely that the ice had formed between the upper end of the downlock actuator and the upper side brace, and was accumulated during taxi on slush-and snow-contaminated taxiways and runway at the departure airport. Ice in this location prevents the actuator from turning freely relative to the upper side brace during landing gear down selection, likely resulting in failure of the piston rod. This condition, if not corrected, could lead to further cases of MLG extension problems, possibly resulting in loss of control of the aeroplane during landing roll-out. * * * * * We are issuing this AD to require actions to correct the unsafe condition on these products.
94-25-09: This amendment adopts a new airworthiness directive (AD), applicable to Rolls-Royce, plc Spey series turbofan engines, that requires a one-time inspection of stage 1 and stage 2 high pressure turbine (HPT) and low pressure turbine (LPT) disks for cracks and corrosion pitting. This amendment is prompted by a report of a stage 7 high pressure compressor disk found cracked due to corrosion. The actions specified by this AD are intended to prevent an HPT or LPT disk burst due to cracking attributed to corrosion, which may result in an uncontained engine failure. The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of February 17, 1995.
94-23-07: This amendment adopts a new airworthiness directive (AD), applicable to certain Lockheed Model L-1011-385 series airplanes, that requires various modifications and inspections of the flight controls, doors, and horizontal stabilizers. This amendment is prompted by a recommendation by the Systems Review Task Force (SRTF) for accomplishment of certain modifications and inspections that will enhance the controllability of these airplanes in the unlikely event of flight control malfunction or failure. The actions specified by this AD are intended to ensure airplane survivability in the event of damage to fully powered flight control systems.
2023-20-04: The FAA is adopting a new airworthiness directive (AD) for certain Airbus SAS Model A350-941 and A350-1041 airplanes. This AD is prompted by reports that excessively deep spot faces on the front engine mounting bolt holes on the wing pylon were detected on the production line. This AD requires a one-time inspection for clash (interference) of the three front engine mounting bolt holes on both the left and right wing pylons, and, depending on findings, accomplishment of applicable corrective actions, as 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.
2018-01-02: We are superseding Airworthiness Directive (AD) 2017-02-03, which applied to certain The Boeing Company Model 767-200, -300, and - 400ER series airplanes. AD 2017-02-03 required inspection of the plastic potable water coupling, and corrective actions if necessary; installation of new spray shrouds; and inspection of previously installed spray shields, and related investigative and corrective actions if necessary. This AD adds airplanes to the applicability and, for certain airplanes, requires hose assembly removals and installations. This AD was prompted by a report of a malfunction of the engine indication and crew alerting system (EICAS) during flight. We are issuing this AD to address the unsafe condition on these products.
2002-09-51: This document publishes in the Federal Register an amendment adopting Emergency Airworthiness Directive (EAD) 2002-09-51, sent previously to all known U.S. owners and operators of specified Bell Helicopter Textron, Inc. (Bell) model helicopters by individual letters. This AD requires cleaning and inspecting the tail rotor (T/R) grip to determine if the grip is made of steel and replacing any grip not made of steel with an airworthy, steel TR grip. This AD is prompted by reports of a certain timed-out life limited T/R grips being improperly identified and reinstalled on Bell Model 204B, 205A, A-1, and B helicopters. The actions specified by this AD are intended to prevent failure of the T/R grip and subsequent loss of helicopter control.
2023-20-06: The FAA is adopting a new airworthiness directive (AD) for certain Airbus SAS Model A330-202, A330-203, A330-223, A330-243, and A330-841 airplanes. This AD was prompted by a determination that the cold working process was partially completed on a certain circumferential joint. This AD requires modification of the circumferential joint, as 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.
2023-20-05: The FAA is superseding Airworthiness Directive (AD) 2020-03- 24, which applied to certain Dassault Aviation Model MYSTERE-FALCON 20- C5, 20-D5, 20-E5, and 20-F5 airplanes. AD 2020-03-24 required revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. This AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This AD continues to require the actions in AD 2020-03-24 and requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations as 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.
2002-15-07: This amendment adopts a new airworthiness directive (AD) for MD Helicopters, Inc., Model MD900 helicopters that requires, for the lateral-mixer bellcrank assembly (bellcrank), establishing a life limit, creating a component history card or equivalent record, determining the hours time-in-service (TIS), and applying a serial number (S/N). This amendment is prompted by additional testing that revealed that the original load test to establish the life limits of the bellcrank did not accurately represent the actual loading. The actions specified by this AD are intended to prevent fatigue failure of the bellcrank and subsequent loss of lateral control of the helicopter.
94-23-10: This amendment supersedes an existing AD that currently requires periodic leak checks of the forward lavatory drain system and provides for the installation of a new drain valve as terminating action. This action continues to require various leak checks, but deletes a previously provided terminating action; adds requirements for leak checks of other lavatory drain systems; provides for the option of revising the FAA-approved maintenance program to include a schedule of leak checks; requires the installation of a cap on the flush/fill line; and requires either a periodic leak check of the flush/fill line cap or replacement of the seals on both that cap and the toilet tank anti-siphon (check) valve. This amendment was prompted by continuing reports of damage to engines and airframes, separation of engines from airplanes, and damage to property on the ground, caused by "blue ice" that had formed from leaking forward lavatory drain systems and subsequently had dislodged fromthe airplane. The actions specified by this AD are intended to prevent such damage associated with the problems of "blue ice."
2023-20-08: The FAA is adopting a new airworthiness directive (AD) for certain General Electric Company (GE) Model CF6-80C2B1F, CF6-80C2B2F, CF6-80C2B4F, CF6-80C2B5F, CF6-80C2B6F, CF6-80C2B7F, and CF6-80C2K1F engines. This AD was prompted by an uncontained engine fire and consequent manufacturer investigation, which revealed that certain bearings were installed improperly. This AD requires inspection of the magnetic chip detector (MCD) probe tip for metallic particles and, if necessary, removal of the engine from service. The FAA is issuing this AD to address the unsafe condition on these products.
94-23-08: This amendment adopts a new airworthiness directive (AD), applicable to all Jetstream Model HS 748 Series 2A and 2B airplanes. This action requires repetitive replacement of the structurally significant items (SSI) on the nose landing gear (NLG) and main landing gear (MLG) with serviceable SSI's. This amendment is prompted by fatigue testing which revealed that the SSI's on the NLG and the MLG have a limited service life. The actions specified in this AD are intended to ensure the replacement of the SSI's that have reached the maximum life limit; SSI's that are not replaced could fail and lead to the failure of the NLG and MLG during taxi, take-off, or landing.