Is AD 2011-31501 a recurring Airworthiness Directive?

No — AD 2011-31501 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2011-31501 apply to?

AD 2011-31501 applies to Rotax — models 912 F2, 912 F3, 912 F4, 912 S2, 912 S3, 912 S4, 914 F2, 914 F3. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2011-31501

one-time

AD 2011-31501 · 2011-12-07 · reciprocating engine

Airworthiness Directives; BRP-Powertrain GmbH & Co. KG Reciprocating Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for BRP- Powertrain GmbH & Co. KG Rotax 912 F2, 912 F3, 912 F4, 912 S2, 912 S3, 912 S4, 914 F2, 914 F3, and 914 F4 reciprocating engines. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

Which aircraft AD 2011-31501 applies to

MakesRotax

Models912 F2, 912 F3, 912 F4, 912 S2, 912 S3, 912 S4, 914 F2, 914 F3, 914 F4, 912, 914

Serial-conditional — narrows to serials 40232–40267, 40293–40374, 40408–40433, 40435–40507.

Part-conditional — 888164.

Applies only when a P/N 888164 crankshaft with a serial number in the listed ranges is installed; the serial ranges are crankshaft S/Ns, not engine S/Ns.

Whether AD 2011-31501 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 2011-31501 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.