Is AD 2010-17-18 a recurring Airworthiness Directive?

Yes — AD 2010-17-18 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2010-17-18 apply to?

AD 2010-17-18 applies to Air Tractor — models AT-802, AT-802A. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2010-17-18

recurring

Official AD 2010-17-18 · FR doc 2010-32905 · 2010-12-30 · airframe

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

What this AD requires

We are revising an existing airworthiness directive (AD) for Air Tractor, Inc. (Air Tractor) Models AT-802 and AT-802A airplanes. That AD 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, and changes the safe life for certain serial (SN) ranges. This AD retains the actions of AD 2010-17-18 and reduces the applicability from all serial numbers beginning with SN- 0001 as required by the previous AD to SN-0001 through SN-0269. This AD was prompted by our evaluation of a comment from David Ligon, Air Tractor, and our determination that we should reduce the applicability from that already required by the previous AD. 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. 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 0001–0269.

Part-conditional — 80540.

Applies to airplanes 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.