AD 74-11-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Honeywell International Inc. | TFE731-2 | AIRESEARCH MANUFACTURING COMPANY of ARIZONA Model TFE731-2-1C and -2-2B Engines |
Unsafe Condition
Improper operation of the engine fuel control computer due to voltage transients in the electrical system
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Required Actions
Modify the fuel control computer P/N 949572-5 in accordance with AiResearch Service Bulletin TFE731-76-3002 or replace it with P/N 949572-8. Operators are urged to implement AiResearch operating information letter OI731-2.
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Compliance Time
Before further engine operation
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Affected Aircraft
AiResearch Model TFE731-2-1C and -2-2B engines installed in AMD-BA Falcon 10 and Lear-Gates Learjet model 35/36 aircraft
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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