Is AD 05-17771 a recurring Airworthiness Directive?

No — AD 05-17771 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 05-17771 apply to?

AD 05-17771 applies to Fokker — models 400, 500, 600. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 05-17771

one-time

AD 05-17771 · 2005-09-09 · airframe

Airworthiness Directives; Fokker Model F27 Mark 200, 400, 500, and 600 Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Fokker Model F27 Mark 200, 400, 500, and 600 airplanes. This AD requires a general visual inspection of the rotary knobs for the fuel tank isolation valves to determine if the seal wire has been installed correctly, and corrective actions if necessary. This AD results from investigation of a recent accident, which found that the rotary knobs controlling the fuel tank isolating valves had been in the shut position. We are issuing this AD to ensure that the rotary knobs are not inadvertently moved to the shut position, which could result in fuel starvation to both engines and consequent inability to maintain controlled flight and landing.

Which aircraft AD 05-17771 applies to

MakesFokker

Models400, 500, 600

certain

Whether AD 05-17771 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 05-17771 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.