88-15-02 SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS): Amendment 39-5974. Applies to all Aerospatiale Model SA 330 series helicopters certificated in any category.
Compliance is required as indicated (unless already accomplished).
To prevent failure of the main rotor head spindles, accomplish the following:
(a) Replace main rotor head spindles (P/N's 330A31-1122-09 and -10 and 330A31- 1782-00 and -01) as follows--
(1) For spindles which have 4,400 or more hours' time in service on the effective date of this AD, replace the spindles within the next 100 hours' time in service; and
(2) For spindles which have less than 4,400 hours' time in service on the effective date of this AD, replace the spindles before they reach 4,500 hours' time in service.
(b) An alternate method of compliance with this AD, which provides an equivalent level of safety, may be used when approved by the Manager, Rotorcraft Standards Staff, Federal Aviation Administration,Fort Worth, Texas 76193-0110, or by the Manager, Aircraft Certification Office, AEU-100, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, Brussels, Belgium.
NOTE: Aerospatiale Service Bulletin No. 01.41 pertains to this subject.
This amendment, 39-5974, becomes effective July 21, 1988.