Results
98-11-21: This amendment adopts a new airworthiness directive (AD), applicable to certain de Havilland Model DHC-8-102, -103, and -301 series airplanes, that requires a one-time inspection for wear and breakage of wire segments of the individual lighting units of the ceiling and sidewall lights, and replacement of any damaged wiring. This amendment also requires installation of teflon spiral wrap on the wiring of the ceiling and sidewall lights. This amendment is prompted by reports of chafing found on the electrical wiring of the cabin ceiling lighting system. The actions specified by this AD are intended to prevent the possibility of a fire on an airplane due to such chafing and consequent short circuiting, overheating, and smoking of the wires on the aircraft structure.
2012-21-04: We are adopting a new airworthiness directive (AD) for all Airbus Model A300 series airplanes; Model A310 series airplanes; and Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called Model A300-600 series airplanes). This AD was prompted by reports of cracked fuel pump canister hoods located in fuel tanks. This AD requires replacing any cracked hood halves of fuel pump canisters. We are issuing this AD to prevent any detached canister hood fragments/debris from being ingested into the fuel feed system, and becoming a potential source of ignition with consequent fire or explosion.
98-11-22: This amendment adopts a new airworthiness directive (AD), applicable to all Short Brothers Model SD3-60 series airplanes, that requires a one-time inspection to detect discrepancies of certain diode mounting assemblies on specified electrical panels; follow-on actions; and repair or replacement with serviceable components, if necessary. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent overheating and possible failure of certain electrical diodes, which could result in loss of electrical service to one or more airplane electrical circuits.
91-03-19 R1: 91-03-19 R1 BOEING: Amendment 39-8237. Docket No. 91-NM-231-AD. Revises AD 91-03-19, Amendment 39-6885. \n\n\tApplicability: Model 727-200 and 727-200F series airplanes, certificated in any category. \n\n\tCompliance: Required as indicated, unless accomplished previously. \n\n\tTo prevent rapid depressurization of the cabin due to fuselage cracks under the center engine inlet pedestal housing, accomplish the following: \n\n\t(a)\tPerform a detailed external visual inspection for fuselage skin cracks from body station (BS) 1090 to BS 1110, in accordance with Boeing Alert Service Bulletin 727-53A0204, Revision 3, dated August 15, 1991, or previous FAA-approved revisions, within the time specified in subparagraph (a)(1), (a)(2), or (a)(3) of this AD, as applicable. \n\n\t\t(1)\tFor airplanes identified as Group 1 in the service bulletin, inspect within 500 flight cycles or 2 months after March 11, 1991 (the effective date of AD 91-03-19, Amendment 39-6885), whichever occurs first. \n\n\t\t(2)\tFor airplanes identified as Group 2 in the service bulletin, inspect within 1,250 flight cycles or 6 months after March 11, 1991, whichever occurs first. \n\n\t\t(3)\tFor airplanes identified as Group 3 in the service bulletin, inspect within 2,500 flight cycles or 18 months after March 11, 1991, whichever occurs first. \n\n\t(b)\tRepeat the inspection required by paragraph (a) of this AD at intervals not to exceed 3,000 flight cycles or 18 months, whichever occurs first. \n\n\t(c)\tIf fuselage skin cracks are found, prior to further flight, accomplish either of the following: \n\n\t\t(1)\tRepair in accordance with the Boeing Alert Service Bulletin 727-53A0204, Revision 2, dated August 9, 1990, or previous FAA-approved revisions. After repair, continue the repetitive inspections in accordance with paragraph (b) of this AD. Or \n\n\t\t(2)\tRepair in accordance with Part III, paragraph B. or D., of the Accomplishment Instructions of Boeing Alert Service Bulletin 727-53A0204, Revision 3, dated August 15, 1991. This constitutes terminating action for the repetitive inspections required by paragraph (b) of this AD. \n\n\t(d)\tIn cases where cracking is not found, modification in accordance with one of the following service documents constitutes terminating action for the repetitive inspections required by paragraph (b) of this AD: \n\n\t\t(1)\tBoeing Drawing 65C35757; or \n\n\t\t(2)\tParagraph C. of the Accomplishment Instructions of Boeing Alert Service Bulletin 727-53A0204, Revision 2, dated August 9, 1990, or Revision 3, dated August 15, 1991. \n\n\t(e)\tAn alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. The request shall be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Seattle ACO.\n \n\t(f)\tSpecial flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a location where the requirements of this AD can be accomplished. \n\n\t(g)\tThe inspection, repair, and modification shall be done in accordance with Boeing Alert Service Bulletin 727-53A0204, Revision 2, dated August 9, 1990; or Revision 3, dated August 15, 1991; as appropriate. 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 Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, Washington 98124. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington; or at the Office of the Federal Register, 1100 L Street NW., Room 8401, Washington, DC. \n\n\t(h)\tThis amendment becomes effective on June 12, 1992.
98-11-18: This amendment adopts a new airworthiness directive (AD) that applies to all Glaser-Dirks Flugzeugbau GmbH (Glaser-Dirks) Model DG-400 gliders. This AD requires replacing the upper rubber shock mounts with mounts made of stainless steel. This AD will also require inspecting the rear plate of the propeller mount for cracks and proper mounting, and replacing or modifying as necessary. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. The actions specified by this AD are intended to prevent failure of the propeller suspension system caused by cracks in the propeller mounts, which could result in loss of the propeller with consequent reduced glider controllability.
98-11-05: This amendment adopts a new airworthiness directive (AD), applicable to certain Saab Model SAAB 2000 series airplanes, that requires performing a one-time inspection of the dropout boxes of the passenger oxygen system to detect discrepancies and determine whether the system operates properly; correcting any discrepancy found; and reworking or installing new components, if necessary. This amendment is prompted by a report indicating that the oxygen system failed to operate correctly after activation at a low cabin pressure due to the incorrect installation of the oxygen masks or oxygen generators during manufacturing. The actions specified by this AD are intended to ensure that a sufficient supply of oxygen is provided to airplane passengers in the event of rapid decompression of the airplane.
2022-06-19: The FAA is adopting a new airworthiness directive (AD) for all Leonardo S.p.a. Model AW109SP helicopters. This AD was prompted by reports of corrosion inside the hoist support assembly (boom assembly) (affected part) that affects both the huck bolt heads (blind bolt fasteners) and the support surface. This AD requires repetitive inspections of the external and internal surfaces of each affected part for cracking and corrosion and, depending on the findings, accomplishment of 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.
2012-21-01: We are adopting a new airworthiness directive (AD) to supersede an existing airworthiness directive for MD Helicopters, Inc. (MDHI), Model MD900 helicopters. The existing AD requires a visual inspection, and if necessary, an eddy current inspection of the main rotor lower hub assembly (lower hub) for a crack. If a crack exists, the AD requires replacing the lower hub with an airworthy lower hub before further flight. Because that AD was immediately effective, we declined to require certain long-term actions prior to public comment. This superseding AD will require the same inspections as the existing AD but will also require long-term recurring inspections and replacing the lower hub with an airworthy lower hub. We are issuing this AD to detect a crack in the lower hub and prevent failure of the lower hub and subsequent loss of control of the helicopter.
98-11-17: This amendment adopts a new airworthiness directive (AD) that applies to all Glaser- Dirks Flugzeugbau GmbH (Glaser-Dirks) Model DG-400 gliders. This AD requires replacing the Bosch electrical system regulator, part number (P/N) 0212920001, with a type 4 E 26 regulator. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. The actions specified by this AD are intended to prevent failure of the electrical system regulator, which could result in smoke entering the cockpit with consequent passenger injury.
2022-06-21: The FAA is superseding Airworthiness Directive (AD) 2018-09- 09, which applied to certain Airbus Model A318 and A319 series airplanes; all Model A320-211, -212, -214, -216, -231, -232, and -233 airplanes; and all Model A321-111, -112, -131, -211, -212, -213, -231, and -232 airplanes. AD 2018-09-09 required modifying the holes of the upper cleat to upper stringer attachments at certain areas of the left- and right-hand wings. Since the FAA issued AD 2018-09-09, additional affected configurations were identified and, for certain airplanes, it was determined that additional modification work and revised compliance times are necessary. This AD retains the requirements of AD 2018-09-09 and adds airplanes, requires different compliance times for certain airplane configurations, and, for certain airplanes, requires additional modifications or reduces compliance times, 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.