AD 76-01-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | True Flight Holdings LLC | AA-5 | Airworthiness Directives; Grumman American Model AA-5, AA-5A and AA-5B Airplanes |
| aircraft | True Flight Holdings LLC | AA-5A | Airworthiness Directives; Grumman American Model AA-5, AA-5A and AA-5B Airplanes |
| aircraft | True Flight Holdings LLC | AA-5B | Airworthiness Directives; Grumman American Model AA-5, AA-5A and AA-5B Airplanes |
Unsafe Condition
Failure of the upper engine cowl due to cracks in the hinge assembly adjacent to the forward and aft attach brackets.
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Required Actions
Visually check the upper engine cowl hinge assembly for cracks within specified time frames. Replace the hinge assembly with Grumman American Part Number 5101030-901 per Service Bulletin No. 152 before further flight if cracks are found, and no later than 100 hours' time in service after the specified dates.
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Compliance Time
Within the next 15 hours' time in service after January 12, 1976 for Model AA-5B airplanes, and within the next 15 hours' time in service after the effective date of this amendment for Model AA-5 and AA-5A airplanes, or within 50 hours' total time in service, whichever occurs last. Thereafter at intervals not to exceed 15 hours' time in service until modified. Replacement must be done before further flight if cracks are found, but no later than 100 hours' time in service after January 12, 1976 for AA-5B and after the effective date for AA-5/AA-5A.
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Affected Aircraft
Grumman American Model AA-5, AA-5A, and AA-5B airplanes with serial numbers AA5-0641 through AA5-0834, AA5A-0001 through AA5A-0050, AA5A-0054 through AA5A-0056, AA5B-0001 through AA5B-0169, AA5B-0171, and AA5B-0180 through AA5B-0183.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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