AD 96-12-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Continental Motors | O-200-A | Airworthiness Directives; Teledyne Continental Motors and Rolls-Royce, plc O-200 Series Reciprocating Engines |
| engine | Continental Motors | O-200-B | Airworthiness Directives; Teledyne Continental Motors and Rolls-Royce, plc O-200 Series Reciprocating Engines |
| engine | Continental Motors | RR O-200-A | Airworthiness Directives; Teledyne Continental Motors and Rolls-Royce, plc O-200 Series Reciprocating Engines |
| engine | Continental Motors | RR O-200-B | Airworthiness Directives; Teledyne Continental Motors and Rolls-Royce, plc O-200 Series Reciprocating Engines |
| engine | Continental Motors | RR O-200-C | Airworthiness Directives; Teledyne Continental Motors and Rolls-Royce, plc O-200 Series Reciprocating Engines |
Unsafe Condition
Possible cylinder cracking with subsequent loss of engine power due to engine timing set to 24o BTC for engines with improved cylinders that have strengthened heads.
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Required Actions
Reset engine timing to 24o (+1o, -1o) BTC on both magnetos for engines with cylinders part numbers lower than 641917. Reset to 28o (+1o, -1o) BTC for engines with all four cylinders part numbers 641917 or higher. Restamp engine data plates accordingly.
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Compliance Time
within the next 50 hours time in service (TIS) after the effective date of this AD
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Affected Aircraft
Teledyne Continental Motors Model O-200A and O-200B and Rolls-Royce, plc Model O-200A, O-200B, and O-200C reciprocating engines installed on aircraft including American Champion 7ECA/402, Cessna 150/A150K-150M, Reims F-150G-F-150M/FA-150K-L, and Taylorcraft F19.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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