Is AD 99-18366 a recurring Airworthiness Directive?

Yes — AD 99-18366 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 99-18366 apply to?

AD 99-18366 applies to British Aerospace Hp137 Mk1, Jetstream — models 3201. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 99-18366

recurring

AD 99-18366 · 1999-07-20 · airframe

Airworthiness Directives; British Aerospace HP137 Mk1, Jetstream Series 200, and Jetstream Models 3101 and 3201 Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD) that applies to all British Aerospace HP137 Mk1, Jetstream series 200, and Jetstream Models 3101 and 3201 airplanes. This AD requires repetitively removing the nose landing gear steering selector valve and installing either a new nose landing gear steering selector valve or one that has been overhauled in accordance with the appropriate component maintenance manual. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the United Kingdom. The actions specified by this AD are intended to prevent the inability to steer the airplane because of wear in the nose landing gear steering selector differential, which could result in loss of control of the airplane during take-off, landing, or taxi operations.

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 99-18366 applies to

MakesBritish Aerospace Hp137 Mk1, Jetstream

Models3201

applicability derived from the AD summary — confirm the model/serial from the records

Whether AD 99-18366 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 99-18366 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.