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Airworthiness Directive 04-3131

recurring
AD 04-3131 · 2004-02-18 · airframe

Airworthiness Directives; Boeing Model 727, 727C, 727-100, and 727-100C Series Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to all Boeing Model 727, 727C, 727-100, and 727-100C series airplanes, that requires repetitive detailed and special detailed inspections for cracks in the web, inner chord, and outer chord of the forward and aft frames of the aft cargo door opening; and repair of any crack found. This action is necessary to detect and correct such cracks, which could result in loss of the aft cargo door and rapid decompression of the airplane. This action is intended to address the identified unsafe condition.

Repetitive inspection. Re-inspect. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 04-3131 applies to

MakesBoeing
Models727-100, 727-100C, 727C

applicability derived from the AD summary — confirm the model/serial from the records

Whether AD 04-3131 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 04-3131 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.