Results
2021-05-21: The FAA is superseding Airworthiness Directive (AD) 2017-23-08 for Agusta S.p.A. (now Leonardo S.p.a.) Model AB139 and AW139 helicopters. AD 2017-23-08 required repetitively inspecting the main rotor (M/R) rotating scissors, removing certain lower half scissor spherical bearings (bearings) from service, replacing the removed bearings with a new bearing, and installing a special nut. This new AD retains the requirements of AD 2017-23-08 and requires replacing each affected bearing with a certain part-numbered bearing. This AD was prompted by investigation results determining that a quality control issue may have affected the production of the affected bearings. The actions of this AD are intended to address an unsafe condition on these products.
2014-16-06: We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2B16 (CL-604 Variant) airplanes. This AD was prompted by reports of in-flight uncommanded rudder movements. This AD requires revising the airplane flight manual (AFM) to incorporate an uncommanded yaw motion procedure. We are issuing this AD to prevent in- flight uncommanded rudder movements, which could lead to structural failure and subsequent loss of the airplane.
2014-16-11: We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 777-200 series airplanes. This AD was prompted by reports of smoke or flames in the passenger cabin of various transport category airplanes related to the wiring for the passenger cabin in-flight entertainment (IFE) system, cabin lighting, and passenger seats. This AD requires, for certain airplanes, doing an inspection of the electrical power control panel for a certain part number, and corrective action if necessary; and, for certain other airplanes, installing a new electrical power control panel, and making changes to the wiring and certain electrical load management system (ELMS) panels. We are issuing this AD to ensure that the flightcrew is able to turn off electrical power to the IFE systems and other non- essential electrical systems through one or two switches in the flight deck in the event of smoke or flames. In the event of smoke or flames in the airplane flight deck or passenger cabin, the flightcrew's inability to turn off electrical power to the IFE system and other non- essential electrical systems could result in the inability to control smoke or flames in the airplane flight deck or passenger cabin during a non-normal or emergency situation, and consequent loss of control of the airplane.
2003-13-16: This amendment adopts a new airworthiness directive (AD) that applies to certain Raytheon Aircraft Company (Raytheon) 90, 100, and 200 series airplanes. This AD requires you to inspect the forward side of the aft pressure bulkhead for scoring damage and repair, if necessary. This AD is the result of reports of the aft pressure bulkhead being damaged by scoring during manufacture. The actions specified by this AD are intended to detect and correct damage to the aft pressure bulkhead of the fuselage. Such damage could lead to fatigue failure of the bulkhead.
2009-23-12: We are revising an existing 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. The MCAI describes the unsafe condition as: During a SOCATA flight test, it has been noted some difficulties for the pilot to release oxygen. After investigation it has been found that, due to the design of the oxygen generator release pin, one of the mask's lanyard linked to the pin can be jammed when it is pulled by a pilot or a passenger. This condition, if not corrected, would lead, in case of an emergency procedure due to decompression, to a risk of generator fault with subsequent lack of oxygen on crew and/or passenger. * * * This revision has been released to clarify the applicability. We are issuing this AD to require actions to correct the unsafe condition on these products.
75-13-05: 75-13-05 HAWKER SIDDELEY AVIATION, LTD: Amendment 39-2233 as amended by Amendment 39- 2302. Applies to Hawker Siddeley DH/BH. 125 airplanes certificated in all categories. Compliance required as indicated, unless already accomplished. To prevent possible failure of cockpit side window Panel "C" assemblies, within two calendar years time in service on original cockpit side window Panel "C" assemblies, or 25 hours time in service on such panels after the effective date of this AD, whichever occurs later, remove the original cockpit side window Panel "C" assemblies having part numbers given in the following table and install in place thereof the corresponding new window assemblies given in the table, in accordance with the instructions for the specific airplane model contained in Hawker Siddeley Aviation, Ltd., Alert Service Bulletin 56-A16, Revision 1, dated May 29, 1974, and accompanying Modification Service Bulletin 56-16 (2410), Revision 2, dated May 23, 1975, or an FAA approved equivalent. ORIGINAL PART NO. REPLACEMENT PART NO. 25FN57A(L/H) replace with 25-6FN219/1A or 25-6FN219/7A 25FN4865A or replace with 25-6FN219/1A or 25FN4865A/B(L/H) 25-6FN219/7A 25FN58A(R/H) replace with 25-6FN220/2A or 25-6FN220/8A 25FN4866A or replace with 25-6FN220/2A or 25FN4866A/B(R/H) 25-6FN220/8A Amendment 39-2233 became effective June 4, 1975. This amendment 39-2302 becomes effective August 15, 1975.
2014-16-08: We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-215-6B11 (CL-215T Variant), and CL-215-6B11 (CL-415 Variant) airplanes. This AD was prompted by several reports indicating that shorter nacelle strut bushings were inadvertently installed on certain airplanes. This AD requires a general visual inspection of the left and right nacelle upper strut bushings; installation of the bolts and preload indicating (PLI) washers, if necessary; and replacement of the bushing or repair of the bushing installation, if necessary. We are issuing this AD to detect and correct inadequate nacelle strut bushings, which provide insufficient engagement in the strut fork end, and could deform under the bearing load and lead to the failure of the joint.
2014-16-04: We are superseding Airworthiness Directive (AD) 2008-14-17 for certain Airbus Model A330-200 and A340-300 series airplanes. AD 2008- 14-17 required a high frequency eddy current (HFEC) inspection, corrective actions if necessary, and modifications. This new AD requires the same actions as those required by AD 2008-14-17, but with a reduced compliance time. This AD was prompted by a determination from a fatigue and damage tolerance evaluation that the compliance time needs to be revised. We are issuing this AD to detect and correct damage of the upper shell structure at the skin and frame interface, which could result in reduced structural integrity of the airframe.
2009-02-06 R1: We are revising an existing airworthiness directive (AD) that applies to certain Boeing Model 737-300, -400, and -500 series airplanes. That AD currently requires repetitive high frequency eddy current inspections for cracking of the 1.04-inch nominal diameter wire penetration hole in the frame and frame reinforcement, between stringers S-20 and S-21, on both the left and right sides of the airplane, and related investigative and corrective actions if necessary. This new AD clarifies certain compliance requirements. This AD results from reports of cracking in the frame, or in the frame and frame reinforcement, common to the 1.04-inch nominal diameter wire penetration hole intended for wire routing. We are issuing this AD to detect and correct cracking in the fuselage frames and frame reinforcements, which could reduce the structural capability of the frames to sustain limit loads, and result in cracking in the fuselage skin and subsequent rapid depressurization of the airplane. \n\n\nDATES: This AD is effective September 23, 2009. \n\tThe Director of the Federal Register approved the incorporation by reference of a certain publication listed in the AD as of April 15, 2009 (74 FR 10469, March 11, 2009). \n\tWe must receive comments on this AD by November 9, 2009.
2014-15-20: We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-400 series airplanes. This AD was prompted by reports of failure of the high pressure shutoff valves (HPSOVs) causing the timer and monitor unit (TMU) to become inoperative since the HPSOV and the TMU are on the same circuit breaker. This AD requires a wiring modification to segregate the HPSOV power supply from the TMU. We are issuing this AD to prevent an inoperative TMU, which could result in the loss of the automatic de-icing mode, and lead to an increased workload for the flight crew and loss of control of the airplane.