AD 93-22-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Continental Motors | C90-12F | TELEDYNE CONTINENTAL MOTORS Model O-200A Engines and TCM C85, C90, O-200, and O-240 Series Engines |
| engine | Continental Motors | C90-12FH | TELEDYNE CONTINENTAL MOTORS Model O-200A Engines and TCM C85, C90, O-200, and O-240 Series Engines |
| engine | Continental Motors | C90-12FJ | TELEDYNE CONTINENTAL MOTORS Model O-200A Engines and TCM C85, C90, O-200, and O-240 Series Engines |
| engine | Continental Motors | C90-12FP | TELEDYNE CONTINENTAL MOTORS Model O-200A Engines and TCM C85, C90, O-200, and O-240 Series Engines |
| engine | Continental Motors | C90-14F | TELEDYNE CONTINENTAL MOTORS Model O-200A Engines and TCM C85, C90, O-200, and O-240 Series Engines |
| engine | Continental Motors | C90-14FH | TELEDYNE CONTINENTAL MOTORS Model O-200A Engines and TCM C85, C90, O-200, and O-240 Series Engines |
| engine | Continental Motors | C90-14FJ | TELEDYNE CONTINENTAL MOTORS Model O-200A Engines and TCM C85, C90, O-200, and O-240 Series Engines |
| engine | Continental Motors | C90-16F | TELEDYNE CONTINENTAL MOTORS Model O-200A Engines and TCM C85, C90, O-200, and O-240 Series Engines |
| engine | Continental Motors | C90-8F | TELEDYNE CONTINENTAL MOTORS Model O-200A Engines and TCM C85, C90, O-200, and O-240 Series Engines |
| engine | Continental Motors | C90-8FJ | TELEDYNE CONTINENTAL MOTORS Model O-200A Engines and TCM C85, C90, O-200, and O-240 Series Engines |
Unsafe Condition
Engine failure due to a cracked air valve in the carburetor air intake housing assembly.
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Required Actions
Within 5 hours time in service after the effective date, inspect the carburetor air intake housing assembly per TCM CSB 93-13. If cracks are found, replace with a serviceable assembly. Thereafter, inspect every 25 hours time in service for assemblies meeting paragraph 2B of TCM CSB 93-13. Replace if cracks are found. Inspect uninstalled assemblies before installation.
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Compliance Time
Within the next 5 hours time in service after the effective date of this AD
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Affected Aircraft
Teledyne Continental Motors (TCM) Model O-200A engines with serial numbers 256030 through 256037; TCM C85, C90, O-200, and O-240 series engines with carburetor air intake housing assemblies, part numbers CE11141, CE11142, 639814, 639815, 641534, and 641689 purchased after August 31, 1991, without a permanent ink stamp 'CSB 93-13'.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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