AD 76-07-10

76-07-10 SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE: Amendment 39- 2573. Applies to Model SA341G helicopters, certificated in all categories.

Compliance is required as indicated.

To prevent possible inflight failure of main gear box (MGB) attachment, accomplish the following:

a) Within the next 200 hours time in service after the effective date of this AD, unless already accomplished, remove, inspect, reinstall or rectify as prescribed, and reidentify the following components in accordance with the applicable provisions of the "Description" paragraph 1C of Gazelle Service Bulletin No. 01.02, as amended October 31, 1973, or an FAA- approved equivalent:

(1) MGB forward and rear "A" frames, P/N 341A.38.1019.00, .02 and .04, and P/N 341A.38.1016.00, .02 and .04, respectively.

(2) MGB forward and rear shackles, P/N 341A.38.1017.00 and .01, and P/N 341A.38.1079.00 and .01, respectively, and associated pins, P/N 341A.31.4169.20 and .21.

b) Within the next 3000 hours time in service after the accomplishment of paragraph (a) of this ad or within the next 3000 hours time in service after the accomplishment of the "Description" paragraph 1C of Gazelle Service Bulletin No. 01.02, as amended October 31, 1973, whichever occurs sooner, and thereafter at intervals not to exceed 3000 hours time in service from time of replacement, replace the MGB forward and rear shackles, P/N's 341A.38.1017.00 and .01 and P/N's 341A.38.1079.00 and .01, respectively, with new shackles of the same part number.

This supersedes Amendment 39-1629 (39 FR 9660), AD 73-09-05.

This amendment becomes effective April 22, 1976.