AD 95-03-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Lycoming Engines | O-235 | Airworthiness Directives; Textron Lycoming O-235 series reciprocating engines |
| engine | Lycoming Engines | O-235-A | Airworthiness Directives; Textron Lycoming O-235 series reciprocating engines |
| engine | Lycoming Engines | O-235-AP | Airworthiness Directives; Textron Lycoming O-235 series reciprocating engines |
| engine | Lycoming Engines | O-235-B | Airworthiness Directives; Textron Lycoming O-235 series reciprocating engines |
| engine | Lycoming Engines | O-235-BP-C | Airworthiness Directives; Textron Lycoming O-235 series reciprocating engines |
| engine | Lycoming Engines | O-235-C1 | Airworthiness Directives; Textron Lycoming O-235 series reciprocating engines |
| engine | Lycoming Engines | O-235-C1A | Airworthiness Directives; Textron Lycoming O-235 series reciprocating engines |
| engine | Lycoming Engines | O-235-C1B | Airworthiness Directives; Textron Lycoming O-235 series reciprocating engines |
| engine | Lycoming Engines | O-235-C1C | Airworthiness Directives; Textron Lycoming O-235 series reciprocating engines |
| engine | Lycoming Engines | O-235-C2A | Airworthiness Directives; Textron Lycoming O-235 series reciprocating engines |
Unsafe Condition
Failure of push rods, part number 73806 with revision letters 'V' or 'W', due to scoring on the inner diameter of the push rod tube introduced during extrusion at the supplier. This can cause engine roughness and power loss.
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Required Actions
Inspect push rods to determine part number and revision letter. Replace all push rods with P/N 73806 and revision letters 'V' or 'W' with serviceable parts within 5 hours time in service after the effective date.
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Compliance Time
within 5 hours time in service (TIS) after the effective date of this AD
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Affected Aircraft
Textron Lycoming O-235 series reciprocating engines shipped from the factory between February 22, 1993, and September 2, 1994, identified by serial number in MSB No. 522, and engines with push rods P/N 73806 installed as service parts on or after February 22, 1993.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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