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Airworthiness Directive 2010-17-18

recurring
Official AD 2010-17-18 · FR doc 2010-20555 · 2010-08-25 · airframe

Airworthiness Directives; Air Tractor, Inc. Models AT-802 and AT-802A Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) to supersede AD 2010-13-08, which applies to all Air Tractor, Inc. (Air Tractor) Models AT-802 and AT-802A airplanes. AD 2010-13-08 currently requires you to repetitively inspect (using the eddy current method) the two outboard fastener holes in both of the wing main spar lower caps at the center splice joint for cracks and repair or replace any cracked spar cap. Since we issued 2010-13-08, we evaluated service information issued by Air Tractor and determined we need to add inspections, add modifications, and change the safe life for certain serial number (SN) ranges. Consequently, this AD would retain the actions of AD 2010-13-08 and would add inspections, add modifications, and change the safe life for certain SN ranges. We are issuing this AD to detect and correct cracks in the wing main spar lower cap at the center splice joint, which could result in failure of the spar cap and lead to wing separation and loss of control of the airplane.

Repetitive inspection. Re-inspect every 800 hours. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2010-17-18 applies to

MakesAir Tractor
ModelsAT-802, AT-802A
Serial-conditional — narrows to serials 0001–?.
Part-conditional — 80540.

Applies to airplanes with serial numbers beginning with -0001 and subsequent, certificated in any category, engaged in agricultural dispersal operations (including those converted between fire fighting and agricultural dispersal), not equipped with the factory-supplied computerized fire gate P/N 80540, and not engaged in only full-time fire fighting.

Whether AD 2010-17-18 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.
Date — When the work was done.
Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.
Signature & certificate — The A&P/IA who returned it to service, with certificate number.
Is AD 2010-17-18 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.