Is AD 04-20406 a recurring Airworthiness Directive?

No — AD 04-20406 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 04-20406

Q: Which aircraft does AD 04-20406 apply to?

AD 04-20406 applies to Mcdonnell Douglas — models DC-10-10F, DC-10-15, DC-10-30, DC-10-30F, DC-10-40, DC-10-40F, MD-10-10F, MD-10-30F. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 04-20406 · 2004-09-14 · airframe

Airworthiness Directives; McDonnell Douglas Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30, DC-10-30F, DC-10-30F (KC10A and KDC-10), DC-10-40, DC-10-40F, MD-10-10F, and MD-10-30F Airplanes

What this AD requires

This amendment supersedes an existing airworthiness directive (AD), applicable to McDonnell Douglas transport category airplanes listed above, that currently requires a one-time detailed inspection to determine if wire segments of the wire bundle routed through the feed- through on the aft side of the flight engineer's station are damaged or chafed, and corrective actions if necessary. That AD also requires revising the wire bundle support clamp installation at the flight engineer's station. For certain airplanes, this amendment requires a new revision of the wire bundle support clamp installation, and modification of a certain wire bundle. This amendment also reduces the applicability in the existing AD. The actions specified by this AD are intended to prevent chafing of the wire bundle located behind the flight engineer's panel caused by the wire bundle coming in contact with the lower edge of the feed-through, and consequent electrical arcing, which could result in smoke and fire in the cockpit. This action is intended to address the identified unsafe condition.

Which aircraft AD 04-20406 applies to

MakesMcdonnell Douglas

ModelsDC-10-10F, DC-10-15, DC-10-30, DC-10-30F, DC-10-40, DC-10-40F, MD-10-10F, MD-10-30F

certain

Whether AD 04-20406 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 04-20406 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.