Is AD 03-21413 a recurring Airworthiness Directive?

No — AD 03-21413 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 03-21413 apply to?

AD 03-21413 applies to Aerospatiale — models ATR72. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 03-21413

one-time

AD 03-21413 · 2003-09-02 · airframe

Airworthiness Directives; Aerospatiale Model ATR42-500 and ATR72 Series Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to certain Aerospatiale Model ATR42-500 and ATR72 series airplanes, that requires inspecting the wire bundle in the area of electrical rack 90VU to detect damage, verifying that the conduit around the wire bundle is in the proper position, and installing a clamp between the wire bundles and the carbon shelves structure. This action is necessary to prevent chafing of a wire bundle, which could result in an electrical short and potential loss of several functions essential for safe flight. This action is intended to address the identified unsafe condition.

Which aircraft AD 03-21413 applies to

MakesAerospatiale

ModelsATR72

certain

Whether AD 03-21413 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 03-21413 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.