AD 81-18-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CT58-100-2 | GENERAL ELECTRIC Model CT58 Engines |
| engine | General Electric Company | CT58-110-1 | GENERAL ELECTRIC Model CT58 Engines |
| engine | General Electric Company | CT58-110-2 | GENERAL ELECTRIC Model CT58 Engines |
| engine | General Electric Company | CT58-140-1 | GENERAL ELECTRIC Model CT58 Engines |
| engine | General Electric Company | CT58-140-2 | GENERAL ELECTRIC Model CT58 Engines |
Unsafe Condition
Looseness, missing, or broken lead lag servo housing attachment screws and lock wire in the fuel control could result in fuel control failure.
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Required Actions
Check lead lag servo housing attachment screws for looseness, missing or broken screws, and lock wire tightness daily before first flight until paragraph 2 is completed. Within 100 hours time in service after 09/17/1981, replace specific screws with NAS1352N3H10 and NAS1352N3H24 for S/N 28090+, or perform counter bore check and replace screws with NAS1352N3H screws for S/N 28089 and below. Replace fuel control immediately if a screw is missing or broken.
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Compliance Time
Compliance required prior to the first flight of each day or until paragraph 2 is accomplished. Compliance required within the next 100 hours time in service after the effective date of this AD.
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Affected Aircraft
General Electric CT58-100-2, CT58-110-1, CT58-110-2, CT58-140-1, CT58-140-2 engines with fuel controls.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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