Airworthiness Directive

AD 2006-23-01 71 FR 65719 Active

Federal Aviation Administration · 14 CFR part 39

FR document
E6-18688
Amendment
39-14798
Published
2006-11-09
Effective
2006-12-14
Models covered
1
Last live check
2026-09-30
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AD

2006-23-01

FR doc E6-18688 · 71 FR 65719

AD 2006-23-01Published 2006-11-09Effective 2006-12-14

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Requires you to repetitively inspect (using the eddy current method) the wing center splice joint two outboard fastener holes on both of the wing main spar lower caps for fatigue cracking; repair or replace any wing main spar…

Full official abstract

The FAA adopts a new airworthiness directive (AD) for all Air Tractor, Inc. (Air Tractor) Model AT-602 airplanes. This AD requires you to repetitively inspect (using the eddy current method) the wing center splice joint two outboard fastener holes on both of the wing main spar lower caps for fatigue cracking; repair or replace any wing main spar lower cap where fatigue cracking is found; and report any fatigue cracking found. This AD results from fatigue cracking at the wing center splice joint outboard fastener hole in one of the wing main spar lower caps. We are issuing this AD to detect and correct cracks in the wing main spar lower cap, which could result in failure of the spar cap and lead to wing separation and loss of control of the airplane.

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All Air Tractor AT-Series directives

Applies to 1 model in our index