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Airworthiness Directive 2009-02-05

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Official AD 2009-02-05 · FR doc E9-3367 · 2009-02-26 · airframe

Airworthiness Directives; Boeing Model 777 Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Boeing Model 777 airplanes. This AD requires installing software upgrades to the airplane information management system (AIMS) located in the flight compartment. This AD results from an investigation that revealed that detrimental effects could occur on certain AIMS software during flight. We are issuing this AD to prevent an unannunciated loss of cabin pressure. If an undetected loss of pressure event were to cause an unsafe pressure in the cabin, the flight crew could become incapacitated.

Which aircraft AD 2009-02-05 applies to

MakesBoeing
Models777-200, 777-200LR, 777-300, 777-300ER, 777

Applies to airplanes identified in Boeing Service Bulletins 777-31A0119 and 777-31A0120, both Revision 2, both dated June 12, 2008.

Whether AD 2009-02-05 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 2009-02-05 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.