FRANKLIN Model 6A4-150-B3 and 6A4-165-B3 reciprocating engines
FRANKLIN Model 6A4-150-B3 and 6A4-165-B3 reciprocating engines (Docket No. 95-ANE-70; Amdt. 39-9489; AD 96-02-04) - supersedes priority letter AD 94-14-11 that requires engines certified to operate on 91 octane or higher avgas to undergo a teardown and analytical inspection for detonation damage...
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