AD 82-12-07

82-12-07 SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS): Amendment 39-4397. Applies to all Model SA330 series helicopters certificated in all categories (Airworthiness Docket No. 82-ASW-9).

Compliance is required within 100 hours' time in service after the effective date of this AD unless already accomplished.

To detect damaged or cracked tail rotor transmission attachment bolts and to assure proper matching of the bolts and chamfered washers, accomplish the following:

a. Remove the tail rotor transmission assembly and remove the three transmission- to-pylon attachment bolts.

b. Inspect the bolts visually for dents under the heads, and for scores or fretting corrosion on the bolt stem or shank. Inspect the bolts for cracks using a magnetic particle or equivalent inspection method.

c. Remove from further service bolts having dents under the head or scoring or fretting on the stem or shank, or bolts having a crack.

d. Install bolts and washers andtail rotor transmission assembly in accordance with SA330 Puma Service Bulletin No. 01.34, dated October 19, 1981, subparagraph C(4)(b), or FAA approved equivalent.

e. Equivalent means of complying with this AD must be approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, Brussels, Belgium. Compliance with Puma Service Bulletin No. 01.34, dated October 19, 1981, satisfies this AD.

This amendment becomes effective on July 8, 1982.