AD 2002-13-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Air Tractor, Inc. Models AT-300, AT-301, AT-302, AT-400, and AT-400A Airplanes |
Unsafe Condition
Fatigue in the lower aluminum spar cap across the \3/8\-inch bolt hole, leading to cracks in the wing centerline splice joint, which could result in wing separation during flight.
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Required Actions
Inspect (one-time) the wing centerline splice joint for cracks. If any crack is found, replace the affected wing spar lower cap. Report the inspection results to the FAA. Replace the wing spar lower caps after a certain amount of usage.
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Compliance Time
Before further flight
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Affected Aircraft
Air Tractor, Inc. Models AT-300, AT-301, AT-302, and AT-400A airplanes with aluminum spar caps; certain Air Tractor Models AT-400 airplanes with aluminum spar caps; and all Models AT-300 and AT-301 airplanes with aluminum spar caps that are or have been converted to turbine power.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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