AD 2000-14-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Air Tractor, Inc. Models AT-501, AT-502, and AT-502A Airplanes |
Unsafe Condition
Fatigue cracks in the wing lower spar cap, which could result in an in-flight separation of the wing from the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the wing lower spar cap at the wing center splice connection for cracks. Modify or replace any cracked lower spar cap as specified in the service information.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 10 hours time-in-service (TIS) after the effective date of this AD, or upon accumulating 4,000 hours TIS for AT-501 and AT-502, or 3,000 hours TIS for AT-502A, whichever occurs later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Air Tractor Models AT-501 (serial numbers 501-002 through 501-0060 converted to turboprop power), AT-502 (serial numbers 502-003 through 502-0061, except those upgraded to the 8,000-pound gross weight configuration), and AT-502A (all serial numbers).
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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