What this page is: a restatement of what the official Federal Register
and manufacturer records show as of the date listed below each item. It is not
a determination that any specific aircraft or engine is, or is not, in compliance.
Under 14 CFR §91.403 and §91.417, the aircraft owner/operator is responsible
for maintaining airworthiness and required records. Always verify against the official FAA
and manufacturer sources linked below before making a maintenance or airworthiness decision.
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Airworthiness Directives
2 records
AD
96-12-06
FR doc 96-14867 · 61 FR 29931
AD 96-12-06Published 1996-06-13Effective 1996-07-18
Teledyne Continental Motors and Rolls- Royce, plc O-200 Series Reciprocating Engines
Requires resetting engine timing to 24 deg.
Full official abstract
Airworthiness Directives; Teledyne Continental Motors and Rolls- Royce, plc O-200 Series Reciprocating Engines
This amendment supersedes two existing airworthiness directives (AD's), applicable to Teledyne Continental Motors and Rolls- Royce, plc O-200 series reciprocating engines, that currently require resetting engine timing to 24 deg. Before Top Center (BTC). This amendment returns to the 28 deg. BTC engine timing for those engines equipped with improved cylinders that have strengthened heads. In addition, this amendment drops the TCM O-200C model which never went into production. This amendment is prompted by the availability of improved cylinders. The actions specified by this AD are intended to prevent possible cylinder cracking with subsequent loss of engine power.
Source: Federal Register document 96-14867, retrieved 2026-08-15 · re-verified against the live Federal Register API 2026-08-17
AD 94-05-05 R1Published 1996-01-29Effective 1996-02-13
Teledyne Continental Motors Models C75, C85, C90, C125, C145, O-200, O-300, and GO-300 Series and Rolls-Royce, plc C90, O-200 and O-300 Series Reciprocating Engines
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
Airworthiness Directives; Teledyne Continental Motors Models C75, C85, C90, C125, C145, O-200, O-300, and GO-300 Series and Rolls-Royce, plc C90, O-200 and O-300 Series Reciprocating Engines
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.
Source: Federal Register document 96-1409, retrieved 2026-08-15 · re-verified against the live Federal Register API 2026-08-17
