Is AD E6-21923 a recurring Airworthiness Directive?

No — AD E6-21923 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD E6-21923 apply to?

AD E6-21923 applies to Alpha Aviation, Robin — models R2160. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive E6-21923

one-time

AD E6-21923 · 2006-12-26 · airframe

Airworthiness Directives; Alpha Aviation Design Limited (Type Certificate No. A48EU formerly held by APEX Aircraft and AVIONS PIERRE ROBIN), Model R2160 Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Alpha Aviation Model R2160 airplanes. This AD requires you to inspect the fuel pressure indication system for leakage at the end of the adapter in the fuel pressure indication system. This AD results from the possibility of fuel leakage at the end of the adapter in the fuel pressure indication system. We are issuing this AD to detect, correct, and prevent fuel leaks in the fuel pressure indicating system. This failure could allow fuel to leak near the exhaust manifold and lead to a fire.

Which aircraft AD E6-21923 applies to

MakesAlpha AviationRobin

ModelsR2160

Serial-conditional — narrows to serials 142–144, 147–148, 151–155.

Whether AD E6-21923 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 E6-21923 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.