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Airworthiness Directive 03-20986

recurring
AD 03-20986 · 2003-08-20 · airframe

Airworthiness Directives; Boeing Model 747-100, 747SP, and 747SR Series Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747-100, 747SP, and 747SR series airplanes, that requires repetitive inspections to find fatigue cracking between the seal ribs of the front spar web of the wing and outboard of the outboard seal rib to front spar station inboard (FSSI) 711, and repair of cracked structure. This AD also provides for an optional modification of a certain area. This action is necessary to find and fix fatigue cracking between the seal ribs of the front spar web of the wing and outboard of the outboard seal rib to FSSI 711, which could result in fuel leakage into the area of the inboard engines, and consequent increased risk of a fire. 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 03-20986 applies to

MakesBoeing
Models747SP, 747SR

certain

Whether AD 03-20986 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 03-20986 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.