# AD 88-12-11: Main Drive Shaft - Type: Airworthiness directive - Status: Current - Products: Airbus Helicopters SA 3180-Alouette Astazou, SA 318B-Alouette Astazou, SA 318C-Alouette Astazou, SA.315B Alouette III, SA.316B Alouette III, SA.316C Alouette III, SA.319B Alouette III and SE.3160 Alouette III - Effective: May 20, 1988 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Rotorcraft - Amendment: 39-5896 - Registered aircraft: 11 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4CE72F142CB2476A86256A4E0049327A.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/88-12-11 ## The airworthiness directive 88-12-11 SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS): Amendment 39-5896. Applies to all SNIAS Alouette/Lama Model SA 315B, SE 3160, SA 316B, SA 316C, SA 3180, SA 318B, SA 318C, and SA 319B helicopters, equipped with main gearbox P/N 3160S62-00-000 or P/N 319A62-00-000; freewheel P/N 3160S60-10-000; and clutch P/N 3160S63-20-000, P/N 3180S63-10-000, or P/N 319A63-00-000, certificated in all categories. Compliance is required as indicated (unless already accomplished). To prevent failures of the main drive shaft and freewheel assemblies by ensuring proper operation of the main gearbox oil jet, P/N 3160A62-01-002, and to improve sealing at the freewheel attachment joints, accomplish the following: (a) Within the next 100 hours time in service or upon observance of a freewheel coupling and seal oil leak, whichever is earlier, comply with Alouette Service Bulletin 65-81, Issue 2, dated February 14, 1979, or Lama Service Bulletin 65-06, Issue 2, dated February 14,1979, as applicable. (b) After compliance with paragraph (a) of this AD, accomplish the following: After the first flight following the installation of a new or overhauled main gearbox, then every 100 hours time in service, comply with section 1(c) of Alouette Service Bulletin 05-65, dated February 14, 1979, or Lama Service Bulletin 05-14, dated February 14, 1979, as applicable. NOTE: Service Bulletin 05-65 supersedes Service Bulletin 05-42, dated November 10, 1971, and Service Bulletin 05-14 supersedes Service Bulletin 05-01, dated November 10, 1971. (c) An alternate method of compliance, which provides an equivalent level of safety, may be used when approved by the Manager, Aircraft Certification Division, Department of Transportation, Federal Aviation Administration, Fort Worth, Texas 76193-0100, or by the Manager, Brussels Aircraft Certification Office, AEU-100, c/o American Embassy, Brussels, Belgium, APO NY 09667. The procedures shall be done in accordancewith Allouette Service Bulletin 65-81, Issue 2, dated February 14, 1979, or Lama Service Bulletin 65-06, Issue 2, dated February 14, 1979, as applicable. 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 Helicopter Corporation, 2701 Forum Drive, Grand Prairie, Texas 75053-4005. Copies may be inspected in the Rules Docket, Office of Regional Counsel, FAA, Southwest Region, 4400 Blue Mound Road, Building 3B, Room 158, Fort Worth, Texas, or at the Office of the Federal Register, 1100 L Street, NW., Room 8401, Washington, D.C. This amendment supersedes AD 73-13-02, Amendment 39-1666, as amended by Amendment 39-2527. This amendment, 39-5896, becomes effective May 20, 1988. ## Affected data sheets (2) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS H1IN](https://openairdocs.org/tcds/H1IN): Airbus Helicopters; names 5 of 5 models: SA.316C Alouette III, SA.316B Alouette III, SA.315B Alouette III, SE.3160 Alouette III, SA.319B Alouette III - [TCDS 7H1](https://openairdocs.org/tcds/7H1): Airbus Helicopters; names 3 of 5 models: SA 318C-Alouette Astazou, SA 3180-Alouette Astazou, SA 318B-Alouette Astazou ## 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: 11 (11 by airframe model, 0 by engine model) - Makers: Aerospatiale 9, Sud 2 Models with the most aircraft: - [Aerospatiale SA315B ALOUETTE III](https://openairdocs.org/model/aerospatiale-sa315b-alouette-iii): 4 aircraft (airframe model) - [Aerospatiale SA319B ALOUETTE III](https://openairdocs.org/model/aerospatiale-sa319b-alouette-iii): 3 aircraft (airframe model) - [Sud SA316B ALOUETTE III](https://openairdocs.org/model/sud-sa316b-alouette-iii): 2 aircraft (airframe model) - [Aerospatiale SA316B ALOUETTE III](https://openairdocs.org/model/aerospatiale-sa316b-alouette-iii): 2 aircraft (airframe model) All 4 models: https://openairdocs.org/ad/88-12-11/models.md Every aircraft: https://openairdocs.org/ad/88-12-11/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.