66-14-04 PRATT & WHITNEY: Amdt. 39-247 Part 39 Federal Register June 8, 1966. Applies to Pratt & Whitney Aircraft Wasp Jr. and R-985 Series Engines.
Compliance required at the next engine overhaul after the effective date of this AD unless already accomplished.
To prevent failure of the cam reduction drive gear assembly and resultant loss of engine power, replace cam reduction drive gear assembly, P/N 3965, with cam reduction drive gear, P/N 331098.
(Pratt & Whitney Aircraft Service Bulletin No. 1671, Supplement No. 1, Revision A, revised November 24, 1959, pertains to this subject.)
This supersedes AD 62-11-05.
This directive effective July 9, 1966.