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Airworthiness Directive

AD 94-05-05 R1 61 FR 2708 Active

Federal Aviation Administration · 14 CFR part 39

Requires inspection of the cylinder rocker shaft bosses for cracks, and inspection of the cylinder rocker shaft for looseness and replacement, if necessary, with a serviceable part.

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FR document
96-1409
Amendment
39-9490
Published
1996-01-29
Effective
1996-02-13
Models covered
4

Last live check: 2026-08-19

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AD

94-05-05 R1

FR doc 96-1409 · 61 FR 2708

AD 94-05-05 R1Published 1996-01-29Effective 1996-02-13

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Requires inspection of the cylinder rocker shaft bosses for cracks, and inspection of the cylinder rocker shaft for looseness and replacement, if necessary, with a serviceable part.

Full official abstract

This amendment revises an existing airworthiness directive (AD), applicable to Teledyne Continental Motors (TCM) Models C75, C85, C90, C125, C145, O-200, O-300, and GO-300 series reciprocating engines, that currently requires inspection of the cylinder rocker shaft bosses for cracks, and inspection of the cylinder rocker shaft for looseness and replacement, if necessary, with a serviceable part. This amendment clarifies that the inspection must be accomplished at the next cylinder removal from the engine or engine overhaul, whichever occurs first, and adds certain Rolls-Royce, plc engines to the AD's applicability. This amendment is prompted by the need to clarify when the inspection must be performed. The actions specified by this AD are intended to prevent engine power loss and engine failure.

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Applies to 4 models in our index