Is AD 2015-10-01 a recurring Airworthiness Directive?

No — AD 2015-10-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2015-10-01 apply to?

AD 2015-10-01 applies to Bombardier — models DHC-8-401, DHC-8-402, DHC-8-403, DHC-8. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2015-10-01

one-time

Official AD 2015-10-01 · FR doc 2015-11389 · 2015-06-09 · airframe

Airworthiness Directives; Bombardier, Inc. Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-400 series airplanes. This AD was prompted by reports of hydraulic fluid loss from the reservoir of the main landing gear (MLG) alternate extension system. This AD requires inspection for correct assembly of the MLG alternate extension system reservoir lid, and corrective action if necessary. We are issuing this AD to, in the event of a failure of the primary MLG extension system, prevent failure of the alternate MLG extension system to fully extend the MLG into a down-and-locked position, which could result in collapse of both left-hand and right-hand MLG sides during touchdown.

Which aircraft AD 2015-10-01 applies to

MakesBombardier

ModelsDHC-8-401, DHC-8-402, DHC-8-403, DHC-8

Serial-conditional — narrows to serials 4001–4424.

Whether AD 2015-10-01 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 2015-10-01 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.