84-01-03 R1 SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS): Amendment 39-4787 as amended by Amendment 39-5534. Applies to Models SA315, SE3160, SA316, and SA319 series helicopters, certificated in all categories, that are equipped with main gearbox "A" frame support assemblies, P/N 315A21.04.000, 315A21.05.000, 3160S22.04.000, and 000.1, or 3160S22.05.000, and 000.1.
Compliance required as indicated, unless already accomplished.
To prevent possible in-flight failure of an "A" frame due to fatigue cracks in either lower eye end-fitting, accomplish the following:
(a) For Model SA315 series helicopters, comply with Lama SA315 Service Bulletin No. 01.18, Revision A, within 50 hours' time in service after the effective date of this AD. This bulletin established a finite service life for certain identified original and repaired "A" frame assemblies and permits only one-time replacement/repair of an eye end-fitting on each "A" frame assembly. Replacing a repair eye end-fitting with another repair eye end-fitting is prohibited.
NOTE: The service bulletin establishes a 3,200-hour service life limit for certain original and repaired "A" frames and a 1,600-hour service life limit for certain other original and repaired "A" frames.
(b) For Models SE3160, SA316, and SA319 series helicopters, comply with Alouette SB No. 01.49, Revision 1, dated May 30, 1986, within 50 hours' time in service after the effective date of this AD amendment. This bulletin establishes a finite service life for certain identified original and repaired "A" frame assemblies for these helicopters and permits only one-time replacement/repair of an eye end-fitting on each "A" frame assembly. Replacing a repair eye end-fitting with another repair eye end-fitting is prohibited.
NOTE: Revision A of the service bulletin establishes for the Model SE3160 an 11,000- hour service life limit for certain original and repaired "A" frames and a 5,500-hour service life limit for certain other original and repaired "A" frames. Revision 1, dated May 30, 1986, instituted on Model SE3160 helicopters an unlimited service life for original "A" frames whose serial number is preceded by letters other than "RO". (Frames with RO serial numbers retain the 11,000-hour and 5,500-hour service life). For Model SE3160 helicopters, a repair eye end-fitting is limited to 5,500 hours service life.
For the Models SA316B and C and SA319B helicopters, the service bulletin, Revision A and 1, retains the present 3,200 or 1,600-hour service life limit for certain original and repaired "A" frames and eye end-fittings and establishes a 1,600-hour service life for certain other original and repair eye end-fittings.
(c) Aircraft may be flown in accordance with FAR 21.197 and 21.199 to a base where compliance may be accomplished.
(d) The Director of the Federal Register approved the incorporation by reference of the manufacturer's specifications and procedures identified and described in this directive pursuant to 5 U.S.C. 552(a)(1). Persons may obtain copies of the service bulletins upon request to Aerospatiale Helicopter Corporation, 2701 Forum Drive, Grand Prairie, Texas 75051, Attention: Customer Support. The documents may be examined at the Office of the Regional Counsel, Southwest Region, Federal Aviation Administration, 4400 Blue Mound Road, Fort Worth, Texas. A file on this AD which includes the incorporated material in full is maintained at the regional office in Fort Worth, Texas. These materials are incorporated as they exist on the date of the approval and a notice of a change to the service life limits stated in these documents will be published in the Federal Register.
(e) Equivalent means of complying with this AD must be approved by the Manager, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, Brussels, Belgium.
This procedure shall be done in accordance with AerospatialeAlouette SB No. 01.49, Revision 1, dated May 30, 1986. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a)(1). Copies may be obtained from Aerospatiale Helicopter Corporation, 2701 Forum Drive, Grand Prairie, Texas 75051, Attention: Customer Support. Copies may be inspected at the Office of the Regional Counsel, FAA, Southwest Region, 4400 Blue Mound Road, Fort Worth, Texas, or at the Office of the Federal Register, 1100 L Street, NW., Room 8401, Washington, D.C.
Amendment 39-4787 became effective February 21, 1984.
This amendment, 39-5534, becomes effective April 25, 1987.