Is AD 03-9427 a recurring Airworthiness Directive?

No — AD 03-9427 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 03-9427 apply to?

AD 03-9427 applies to Mcdonnell Douglas — models MD-11F. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 03-9427

one-time

AD 03-9427 · 2003-04-21 · airframe

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

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model MD-11 and MD-11F airplanes, that requires an inspection to detect damage of the wiring/ bundles routed to the wire support bar of the circuit breaker panel and to the circuit breakers, and an inspection of the wiring/bundles for correct routing. This amendment also requires installation of protective sleeving, spacers, and sta-straps; and corrective/follow-on actions, if necessary. The actions specified by this AD are necessary to prevent chafing and consequent arcing or loss of electrical power to associated avionics buses in the upper avionics circuit breaker panel of the main observer's station, which could result in smoke and/or fire in the cockpit. This action is intended to address the identified unsafe condition.

Which aircraft AD 03-9427 applies to

MakesMcdonnell Douglas

ModelsMD-11F

certain

Whether AD 03-9427 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 03-9427 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.