# AD 92-18-05: Main Landing Gear - Type: Airworthiness directive - Status: Current - Products: ATR - GIE Avions de Transport R gional ATR42-300 and ATR42-320 - Effective: October 13, 1992 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Amendment: 39-8349 - Docket: 91-NM-165-AD - Registered aircraft: 20 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A976B0B65F74416886256982006FF9BA.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/92-18-05 ## The airworthiness directive 92-18-05 AEROSPATIALE: Amendment 39-8349. Docket 91-NM-165-AD. Applicability: Model ATR42-300 and ATR42-320 series airplanes; as listed in Aerospatiale Service Bulletin ATR42-53-0043, Revision 4, dated April 30, 1991; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent the collapse of the main landing gear, accomplish the following: (a) Prior to the accumulation of 10,000 landings since new, or within 30 days after the effective date of this AD, whichever occurs later, accomplish the following in accordance with Aerospatiale Service Bulletin ATR42-53-0043, Revision 4, dated April 30, 1991: (1) Install a new machined reinforcement fitting (Modification 1281) on the left and right sides of the main landing gear (MLG) in accordance with the service bulletin. (2) Perform a one-time eddy current inspection of the fastener holes on the left and right sides of the MLG to detect fatigue cracks in accordance with the service bulletin. If any cracks are found, prior to further flight, repair in accordance with the service bulletin. (3) Install doublers on Stringer 15 at Frame 25 on the reinforcement plate in accordance with the service bulletin. NOTE: Previous editions of this service bulletin erroneously referred to Stringer 15 as Stringer 14. The doubler can only be installed at Stringer 15. (4) Perform cold working procedures of two fastener holes on the left and right sides of the MLG in accordance with the service bulletin. (b) Airplanes modified prior to the effective date of this AD in accordance with earlier versions of Aerospatiale Service Bulletin ATR42-53-0043 issued prior to Revision 4 need not be inspected or modified further. (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 AirplaneDirectorate. 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. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch. (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 installation, inspection, and cold working shall be done in accordance with Aerospatiale Service Bulletin ATR42-53-0043, Revision 4, dated April 30, 1991, which includes the following list of effective pages: Page Number Revision Level Date 1-2, 29 4 April 30, 1991 3-6, 10-28, 30-32 3 October 30, 1990 7-9 Original April 21, 1989 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 October 13, 1992. ## Affected data sheets (1) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A53EU](https://openairdocs.org/tcds/A53EU): ATR – GIE Avions de Transport Régional; names 2 of 11 models: ATR42-300, ATR42-320 ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 20 (20 by airframe model, 0 by engine model) - Makers: Aerospatiale/Aeritalia 16, Aerospatiale/Alenia 2, Atr-Gie Avions De Transport 1, Atr-Gie Avions De Trnsp Rgnl 1 Models with the most aircraft: - [Aerospatiale/Aeritalia ATR 42-300](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-300): 12 aircraft (airframe model) - [Aerospatiale/Aeritalia ATR 42-320](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-320): 4 aircraft (airframe model) - [Aerospatiale/Alenia ATR 42-320](https://openairdocs.org/model/aerospatiale-alenia-atr-42-320): 2 aircraft (airframe model) - [Atr-Gie Avions De Transport ATR-42-320](https://openairdocs.org/model/atr-gie-avions-de-transport-atr-42-320): 1 aircraft (airframe model) - [Atr-Gie Avions De Trnsp Rgnl ATR 42-300](https://openairdocs.org/model/atr-gie-avions-de-trnsp-rgnl-atr-42-300): 1 aircraft (airframe model) All 5 models: https://openairdocs.org/ad/92-18-05/models.md Every aircraft: https://openairdocs.org/ad/92-18-05/aircraft.md Its text cites no advisory circulars or STCs. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.