Results
2011-06-05: The FAA is superseding an existing airworthiness directive (AD), which applies to all Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. That AD currently requires repetitive detailed inspections of the slat track downstop assemblies to verify that proper hardware is installed, one-time torquing of the nut and bolt, and corrective actions if necessary. This new AD also requires replacing the hardware of the downstop assembly with new hardware of the downstop assembly, doing a detailed inspection or a borescope inspection of the slat cans on each wing and the lower rail of the slat main tracks for debris, replacing the bolts of the aft side guide with new bolts, and removing any debris found in the slat can. This AD also removes airplanes from the applicability. This AD results from reports of parts coming off the main slat track downstop assemblies. We are issuing this AD to prevent loose or missing parts from the main slat track downstop assemblies from falling into the slat can and causing a puncture, which could result in a fuel leak and consequent fire.
96-11-08: This amendment supersedes an existing airworthiness directive (AD), applicable to Robinson Helicopter Company (Robinson) Model R22 helicopters, that currently requires installing a low-rotor RPM caution light and resetting the low-RPM warning unit to activate the warning horn and caution light at 94% to 96% revolutions-per-minute (RPM). This amendment requires installation of an improved throttle governor; an adjustment to the low RPM warning unit threshold to increase the RPM at which the warning horn and caution light activate; and, revisions to the R22 Rotorcraft Flight Manual that prohibit flight with the improved throttle governor selected off, except in certain situations. This amendment is prompted by an FAA Technical Panel review of Model R22 accident history data which revealed that main rotor (M/R) blade stall at abnormally low M/R RPM resulted in accidents. The actions specified by this AD are intended to minimize the possibility of pilot mismanagement of the M/R RPM, which could result in unrecoverable M/R blade stall and subsequent loss of control of the helicopter.
84-02-04: 84-02-04 AIRBUS INDUSTRIE: Amendment 39-4795. Applies to the Model A300 B2-1A, B2- 1C, B4-2C, B2K-3C, B4-103, B2-203, and B4-203 series airplanes, certificated in all categories. To prevent failure of certain main landing gear components, within 180 days after the effective date of this AD or prior to accumulation of the number of landings specified in each paragraph below, whichever occurs later, accomplish the following, unless previously accomplished: A. Prior to the accumulation of 13,000 landings, replace the shock absorber sliding rod attachment fittings, part numbers C61643-4 and C61643-5, with reinforced components in accordance with the instructions of Messier-Hispano-Bugatti (MHB) Service Bulletin 470-32-172, Revision 1, dated June 10, 1981, for aircraft having the serial numbers specified in Airbus Industrie (AI) Service Bulletin A300-32-148, Revision 1, dated December 29, 1978. B. Prior to the accumulation of 5,000 landings, inspect the trunnion on the actuating cylinder side of the hinge arm, part number C65381-2, in accordance with the instructions of MHB Service Bulletin 470-32-386, Revision 1, dated September 30, 1981, on airplanes having serial numbers specified in AI Service Bulletin A300-32-328, dated August 31, 1981. 1. If no corrosion is found, install a seal to improve the lubrication of the hinge arm trunnion in accordance with the instructions of MHB Service Bulletin 470-32-385, dated August 14, 1981 (related to AI Service Bulletin A300-32-326, dated August 31, 1981), and repeat the above inspections at intervals not to exceed 2,000 landings. 2. If corrosion or cracks are found, remove the corrosion and cracks in accordance with the instructions of MHB Service Bulletin 470-32-386, Revision 1, dated September 30, 1981, and install the seal in accordance with paragraph B.1, above. Repeat the above inspections at intervals not to exceed 250 landings. 3. If the depth of material removed when performing the reworkof subparagraph B.2 is greater than one millimeter from the original profile, replace the hinge arm prior to further flight. C. Prior to the accumulation of 6,500 landings and thereafter at intervals not to exceed 400 landings, inspect the lateral inboard trunnion of the hinge arms, part numbers C65381- 2 and C65381-4, for cracks in accordance with the instructions of MHB Service Bulletin 470-32- 442, dated March 31, 1983, for aircraft having serial numbers specified in AI Service Bulletin A300-32-365, dated June 27, 1983. 1. For hinge arms that have incorporated modification MHB 595 in the trunnion located in the inboard position on the actuating cylinder side, the time limit is to be counted from the date of reconditioning. For all other cases, the time limit is to be counted from the day the arm was put into service. 2. The repetitive inspections required in paragraph C, above, may be terminated when the actions described in paragraph 2.C of MHB Service Bulletin 470-32-442, on the inboard, outboard, and forward trunnions are accomplished. D. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. E. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD. This amendment becomes effective February 27, 1984.
2011-06-04: 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: During a recent in-service event the flight crew of a Trent 700 powered A330 aircraft [[Page 13076]] reported a temporary Engine Pressure Ratio (EPR) shortfall on engine 2 during the take-off phase of the flight. * * * Data analysis confirmed a temporary fuel flow restriction and subsequent recovery, and indicated that also engine 1 experienced a temporary fuel flow restriction shortly after the initial event on engine 2 * * *. Based on previous industry-wide experience, the investigation of the event has focused on the possibility for ice to temporarily restrict the fuel flow. * * * * * * The scenario of ice being shed and causing a temporary blockage in the engine fuel system may lead to a temporary fuel flow restriction to the engine. This may result in a possible engine surge or stall condition, and in the engine not being able to provide the commanded thrust. * * * * * This AD requires actions that are intended to address the unsafe condition described in the MCAI.
96-11-03: This amendment supersedes an existing airworthiness directive (AD), applicable to certain Boeing Model 747-200, -300, and -400 series airplanes, that currently requires inspection of each fuel feed line of the outboard engine in the engine strut to determine if interference with an adjacent pneumatic duct clamp has caused damage, and repair or replacement of the fuel feed tube, if necessary. That AD also currently requires inspection and replacement of the adjacent pneumatic duct clamp with a non-rotating type clamp, if necessary. This amendment requires modification of the upper gap area of the strut of the number 1 and 4 engines. This amendment is prompted by a report of fuel leakage in the strut of the number 4 engine due to a high profile clamp that chafed the fuel line. The actions specified by this AD are intended to prevent chafing of the fuel line in the strut of the number 1 and 4 engines, which could result in rupture of the fuel line and subsequent in-flightengine fire.
96-11-04: This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-9 and Model DC-9-80 series airplanes, Model MD-88 airplanes, and C-9 (military) series airplanes, that requires modification of the slant panel insulation blankets on the slant pressure panel of the main landing gear. The amendment also requires a visual inspection to detect discrepancies of the left and right seal assemblies of the overwing emergency exit door, and replacement of any discrepant door seal. This amendment is prompted by a report that the flaps and landing gear did not extend or retract properly due to water accumulation in the slant pressure panel area. The actions specified by this AD are intended to prevent such water accumulation, which could result in the failure of the flaps or landing gear to properly extend or retract.
2011-06-06: We are superseding an existing airworthiness directive (AD) for the products listed above. That AD currently requires you to incorporate operating limitations of maximum operating altitude of 37,000 feet into Section 2, Limitations, of the airplane flight manual (AFM). This AD requires you to incorporate operating limitations of maximum operating altitude of 30,000 feet into Section 2, Limitations, of the AFM. This AD was prompted by several incidents of engine surge. We are issuing this AD to prevent hard carbon buildup on the static vane, which could result in engine surges. Engine surges may result in a necessary reduction in thrust and decreased power for the affected engine. In some cases, this could result in flight and landing under single-engine conditions. It is also possible this could affect both engines at the same time, requiring dual-engine shutdown.
96-10-15: This amendment supersedes Airworthiness Directive (AD) 80-14-06, which currently requires the following on The New Piper Aircraft, Inc. (Piper) Models PA31, PA31-300, PA31-325, and PA31-350 airplanes: repetitively inspecting the outboard flap tracks, wing rib flanges, and the rear spar web at Wing Station (WS) 147.5 on each wing, and modifying the area at WS 147.5 on both wings if any cracks are found as terminating action for the repetitive inspection requirement. The Federal Aviation Administration's policy on aging commuter-class aircraft is to eliminate or, in certain instances, reduce the number of certain repetitive short-interval inspections when improved parts or modifications are available. This action retains the repetitive inspection requirement of AD 80-14-06, and requires modifying the area at WS 147.5 on both wings as terminating action for the repetitive inspection requirement. The actions specified in this AD are intended to prevent structural failure under certain load conditions caused by cracked areas at WS 147.5, which, if not detected and corrected, could result in loss of control of the airplane.
92-27-17: 92-27-17 SHORT BROTHERS, PLC: Amendment 39-8452. Docket 91-NM-98-AD. Applicability: All Model SD3-30 and SD3-60 series airplanes, certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent inadvertent engine shutdown, accomplish the following: (a) Within 120 days after the effective date of this AD, lock the left and right low pressure (LP) levers in the open position using securing wires, in accordance with Shorts Service Bulletins SD330- 28-35 (for Model SD3-30 series airplanes) or SD360-28-20 (for Model SD3-60 series airplanes), both dated February 22, 1991; as applicable. (b) Within 120 days after the effective date of this AD, following accomplishment of the modification required by paragraph (a) of this AD, revise the Limitations Sections of the FAA-approved Airplane Flight Manual (AFM) by inserting the following amendments, as applicable: (1) For Model SD3-30 series airplanes: SBH3.3 Amendment p/16 SBH3.6 Amendment p/12 (2) For Model SD3-60 series airplanes: SB4.3 Amendment p/19 SB4.6 Amendment p/12 SB4.8 Amendment p/14 (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 locking requirement shall be done in accordance with Shorts Service Bulletin SD330- 28-35, dated February 22, 1991, and Shorts Service Bulletin SD360-28-20, dated February 22, 1991. The revisions to the Airplane Flight Manual (AFM) shall be done in accordance with the following list of AFM Amendment Documents and related effective pages: AFM Amendment Document Number Page Number Section Number SBH3.3 Amendment p/16 5, 6 3 7, 42 4 SBH3.6 Amendment p/12 5, 6 3 7, 48 4 SB4.3 Amendment p/19 5, 6 3 7, 50 4 SB4.6 Amendment p/12 5, 6 3 7, 50 4 SB4.8 Amendment p/14 5, 6 3 7, 50 4 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 Shorts Brothers, PLC, 2011 Crystal Drive, Suite 713, Arlington, Virginia 22202-3719. 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 NorthCapitol Street, NW., suite 700, Washington, DC. (f) This amendment becomes effective on February 25, 1993.
2022-01-02: The FAA is adopting a new airworthiness directive (AD) for certain De Havilland Aircraft of Canada Limited Model DHC-8-400, -401, and -402 airplanes. This AD was prompted by a report that the epoxy primer on the internal bore of the nacelle and landing gear attachment pins was not applied, and corrosion on the internal bore of the wing rear spar attachment pins was found. This AD requires doing a detailed visual inspection of the nacelle to wing rear spar attachment pins, and the nacelle and landing gear attachment pins, for any corrosion, and doing all applicable corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.