Is AD 2009-03-01 a recurring Airworthiness Directive?

No — AD 2009-03-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2009-03-01 apply to?

AD 2009-03-01 applies to Learjet — models 55B, 55C. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2009-03-01

one-time

Official AD 2009-03-01 · FR doc E9-3023 · 2009-02-18 · airframe

Airworthiness Directives; Learjet Model 55, 55B, and 55C Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Learjet Model 55, 55B, and 55C airplanes. This AD requires inspecting the installation of the forward light assembly in the aft lavatory to determine the location of the terminal connector; inspecting for damage of the light assembly terminals, wires, and oxygen lines; inspecting to determine if the cable nipple is installed over the light assembly terminal; and doing corrective actions if necessary. This AD also requires installing a clamp to the forward side of the frame to maintain a positive distance between the light assembly and oxygen line. This AD results from a report of a cabin fire in the left-hand upper cabin fuselage above the aft cabin window at frame 23. We are issuing this AD to detect and correct improper installation of the lavatory light assembly, which could result in contact between the electrical terminals of the light assembly and an adjacent oxygen supply line, and consequent short circuit or fire hazard.

Which aircraft AD 2009-03-01 applies to

MakesLearjet

Models55B, 55C

certain

Whether AD 2009-03-01 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 2009-03-01 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.