Is AD 2008-26-01 a recurring Airworthiness Directive?

No — AD 2008-26-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2008-26-01 apply to?

AD 2008-26-01 applies to Air Tractor, Inc — models AT-200, AT-300, AT-400, AT-500, AT-600, AT-800. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2008-26-01

one-time

Official AD 2008-26-01 · FR doc E8-29568 · 2008-12-24 · airframe

Airworthiness Directives; Air Tractor, Inc. Models AT-200, AT-300, AT-400, AT-500, AT-600, and AT-800 Series Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) to supersede AD 2008-11-17, which applies to certain Air Tractor, Inc. Models AT-200, AT-300, AT-400, AT-500, AT-600, and AT-800 series airplanes. AD 2008-11-17 currently requires you to install an overturn skid plate kit or a modification to the overturn skid plate already installed. Since we issued AD 2008-11-17, the manufacturer has notified us that Model AT-401B airplanes also need a modification to the overturn skid plate. Consequently, this AD would retain the actions of AD 2008-11-17 and add the requirement to modify the overturn skid plate installed on Model AT-401B airplanes. We are issuing this AD to prevent the front and rear connections of the overturn skid plate to the airplane from breaking, which could allow foreign debris to enter the cockpit during an airplane overturn. This condition, if not corrected, could lead to pilot injury.

Which aircraft AD 2008-26-01 applies to

MakesAir Tractor, Inc

ModelsAT-200, AT-300, AT-400, AT-500, AT-600, AT-800

certain

Whether AD 2008-26-01 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 2008-26-01 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.