AD Amdt-39-14564
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Air | Tractor, Inc. Model AT-501 | Airworthiness Directives; Air Tractor, Inc. Model AT-501 Airplanes |
Unsafe Condition
Fatigue cracks in the wing lower spar cap before the originally established safe life is reached, which could result in failure of the spar cap and lead to wing separation and loss of control of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Retains the actions required in AD 2002-11-05 for Model AT-501 airplanes, including eddy-current inspections of the wing lower spar cap immediately before doing the replacement/modification to detect and correct any crack in a bolt hole before it extends to the modified center section of the wing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours after the effective date of this AD.
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Affected Aircraft
Air Tractor, Inc. Model AT-501 airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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