Is AD 2009-26-16 a recurring Airworthiness Directive?

No — AD 2009-26-16 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2009-26-16 apply to?

AD 2009-26-16 applies to Mcdonnell Douglas — models MD-11, MD-11F. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2009-26-16

one-time

Official AD 2009-26-16 · FR doc E9-30709 · 2009-12-31 · airframe

Airworthiness Directives; McDonnell Douglas Corporation Model MD-11 and MD-11F Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Model MD-11 and MD-11F airplanes. This AD requires a one-time inspection to determine if wires touch the upper surface of the center upper auxiliary fuel tank and marking the location, if necessary; a one-time inspection of all wire bundles above the center upper auxiliary fuel tank for splices and damage; a one-time inspection for damage to the fuel vapor barrier seal and upper surface of the center upper auxiliary fuel tank; and corrective actions, if necessary. This AD also requires installation of nonmetallic barrier/shield sleeving, new clamps, new attaching hardware, and a new extruded channel. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to reduce the potential of ignition sources inside fuel tanks, which, in combination with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane.

Which aircraft AD 2009-26-16 applies to

MakesMcdonnell Douglas

ModelsMD-11, MD-11F

Applies only to airplanes identified in Boeing Service Bulletin MD11-28-126, Revision 1, dated June 18, 2009 (clarified by Boeing Information Notice MD11-28-126 IN 02, dated July 1, 2009).

Whether AD 2009-26-16 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 2009-26-16 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.