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92-25-03: 92-25-03 AEROSPATIALE: Amendment 39-8418. Docket No. 91-NM-99-AD. Applicability: Model SN 601 Corvette series airplanes on which Modifications 1291 and 1368 have not been incorporated, certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent damage to the fuselage passenger door frame skins at the hinge axis, accomplish the following: (a) Prior to the accumulation of 8,100 landings, or within 100 landings after the effective date of this AD, whichever occurs later, perform a high frequency eddy current inspection of the skins on the upper and lower frames at the level of the passenger door hinge pins to detect cracks, in accordance with Aerospatiale Corvette Service Bulletin 53-21, dated June 25, 1990. (1) If no crack is found as a result of the inspection required by paragraph (a) of this AD, repeat the inspection at intervals not to exceed 3,300 landings. (2) If any crack is found as a result of the inspection required by paragraph (a) of this AD, prior to further flight, accomplish Modification 1291, in accordance with Aerospatiale Corvette Service Bulletin 53-22, dated July 20, 1990. Accomplishment of this modification constitutes terminating action for the inspections required by paragraph (a) of this AD. (b) Prior to the accumulation of 9,100 landings or within 100 landings after incorporation of Modification 1291, whichever occurs later, perform a low frequency eddy current inspection of the upper door frame, and a high frequency eddy current inspection of the lower door frame, to detect damage to the fuselage passenger door frame skins at the hinge axis between Frames 11 and 12, in accordance with Aerospatiale Corvette Service Bulletin 53-23, Revision 2, dated November 6, 1991. (1) If no damage is found as a result of the inspections required by paragraph (b) of this AD, repeat the inspections at intervals not to exceed 3,600 landings. (2) If any damage is found as a result of the inspections required by paragraph (b) of this AD, prior to further flight, accomplish Modification 1368, in accordance with Aerospatiale Corvette Service Bulletin 53-8, Revision 1, dated August 20, 1990. Accomplishment of this modification constitutes terminating action for the low frequency eddy current inspection of the upper door frame required by paragraph (b) of this AD; however, the high frequency eddy current inspection of the lower door frame required by paragraph (b) of this AD must continue to be performed at intervals not to exceed 3,600 landings. (c) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Standardization Branch, ANM-113. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch, ANM-113. (d) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (e) The inspections and modifications shall be done in accordance with the following Aerospatiale Corvette service bulletins, as applicable, which contain the specified effective pages: Service Bulletin Referenced and Date Page Number Revision Level Shown on Page Date Shown on Page Service Bulletin 53-21, June 25, 1990 1-9 Original June 25, 1990 Service Bulletin 53-22, July 20, 1990 1-13 Original July 20, 1990 Service Bulletin 53-23, Revision 2, November 6, 1991 1-5, 12-31 6-11 2 1 November 6, 1991 March 29, 1991 Service Bulletin 53-8, Revision 1, August 20, 19901-11 1 August 20, 1990 This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from Aerospatiale, 316 Route de Bayonne, 31060 Toulouse, Cedex 03, France. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (f) This amendment becomes effective on December 23, 1992.
2007-19-14: We are adopting a new airworthiness directive (AD) for the products listed above that would supersede existing ADs. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: Findings of corrosion, wear and cracks in the upper wing strut fittings on some PC-6 aircraft have been reported in the past. It is possible that the spherical bearing of the wing strut fittings installed in the underwing can be loose in the fitting or cannot rotate because of corrosion. In this condition, the joint cannot function as designed and fatigue cracks may then develop. Undetected cracks, wear and/or corrosion in this area could lead to failure on the upper attachment fitting. This could result in the failure of the wing structure with subsequent loss of control of the aircraft. This AD requires actions that are intended to address the unsafe condition described in the MCAI.
2001-08-06: This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A300 B4-620, A310-203, A310-221, and A310-222 series airplanes, that requires repetitive inspections of fuselage frame 07 in the upper frame section assemblies of the lateral cockpit windows, and corrective action, if necessary. Accomplishment of certain corrective actions extends the repetitive inspection interval. The actions specified by this AD are intended to detect and correct fatigue cracking in that area, which could result in reduced structural integrity of the airplane.
2017-17-15: We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2E25 (Regional Jet Series 1000) airplanes. This AD was prompted by reports of failures of the landing gear alternate-extension system. This AD requires replacement of certain nose landing gear and main landing gear electro-mechanical actuators. We are issuing this AD to address the unsafe condition on these products.
2001-08-08: This amendment adopts a new airworthiness directive (AD) that applies to all Raytheon Aircraft Company (Raytheon) Beech Models 35-C33A, E33A, E33C, F33A, F33C, S35, V35, V35A, V35B, 36, and A36 airplanes that incorporate a certain Teledyne Continental engine configuration. This AD requires you to repetitively replace the existing Aeroquip V-band exhaust clamp. The actions specified by this AD are intended to prevent the tailpipe from detaching from the turbocharger due to failure of the V-band exhaust clamp. Clamp failure could result in the release of high temperature gases inside the engine compartment with the potential for a consequent fire in the engine compartment.
2019-19-02: The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 747-400 and 747-400F series airplanes. This AD was prompted by an evaluation that determined fatigue cracks could develop in the underwing longerons. This AD requires repetitive inspections of the underwing longerons and certain fuselage skins for any crack, and applicable on-condition actions. The FAA is issuing this AD to address the unsafe condition on these products.
2017-17-14: We are adopting a new airworthiness directive (AD) for certain Saab AB, Saab Aeronautics Model 340A (SAAB/SF340A) airplanes. This AD was prompted by the discovery of circuit breakers of unsuitable strength that fail to protect the system from an overcurrent. This AD requires replacing certain circuit breakers. We are issuing this AD to address the unsafe condition on these products.
2001-08-04: This amendment supersedes an existing airworthiness directive (AD) for Bell Helicopter Textron Inc. (BHTI) Model 205A-1, 205B, 212, 412, and 412CF helicopters. That AD currently requires inspecting the locking washer on each main rotor actuator (actuator) for twisting or damage to the tab and replacing any locking washer that has a twisted or damaged tab. Replacing certain locking washers, regardless of condition, is also required within a specified time period. Installing a certain airworthy locking device on each actuator constitutes terminating action for the requirements of that AD. This amendment requires the same actions as the existing AD but adds the BHTI Model 412EP helicopters to the applicability. This amendment is prompted by the discovery that the BHTI Model 412EP helicopter was inadvertently omitted from the existing AD. The actions specified by this AD are intended to prevent an actuator piston from unthreading from its rod end, loss of control of the mainrotor, and subsequent loss of control of the helicopter.
2018-10-03: We are adopting a new airworthiness directive (AD) for certain Pacific Aerospace Limited Model 750XL airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as abrasion damage to the wing leading edge that could result in a fuel leak. We are issuing this AD to require actions to address the unsafe condition on these products.
94-03-09: This amendment adopts a new airworthiness directive (AD), applicable to all Lockheed Model L-1011-385 series airplanes, that requires inspection, modification, and replacement, if necessary, of the flap vane lugs. This amendment is prompted by reports of failure of flap vane lugs due to stress corrosion. The actions specified by this AD are intended to prevent failure of the flap vane lugs, which could lead to separation of flap vane from the airplane and cause injury to people or damage to property on the ground.