Is AD 01-21495 a recurring Airworthiness Directive?

No — AD 01-21495 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 01-21495 apply to?

AD 01-21495 applies to Mcdonnell Douglas — models MD-10. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 01-21495

one-time

AD 01-21495 · 2001-08-29 · airframe

Airworthiness Directives; McDonnell Douglas Model DC-10 and MD-10 Series Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-10 and MD-10 series airplanes, that requires an inspection of the one phase remote control circuit breakers (RCCB) in the main avionics compartment and center accessory compartment to determine their part numbers and serial numbers, and replacement of RCCB's with certain RCCB's, if necessary. This action is necessary to ensure that defective braze joints of certain latch assemblies of the RCCB are not installed on the airplane. Defective braze joints could fail and prevent the RCCB from tripping during an overload condition, which could result in a fire and smoke in certain wire bundles that are routed to and from the main avionics compartment or center accessory compartment. This action is intended to address the identified unsafe condition.

Which aircraft AD 01-21495 applies to

MakesMcdonnell Douglas

ModelsMD-10

certain

Whether AD 01-21495 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 01-21495 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.