Is AD 2012-20748 a recurring Airworthiness Directive?

No — AD 2012-20748 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2012-20748 apply to?

AD 2012-20748 applies to Rotax — models 912 F2, 912 F3, 912 F4, 912 S2, 912 S3, 912 S4, 912. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2012-20748

one-time

AD 2012-20748 · 2012-08-24 · reciprocating engine

Airworthiness Directives; BRP-Powertrain GmbH & Co KG Rotax 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; and 912 S4 reciprocating engines. This AD requires replacing the pressure side fuel hose on certain fuel pumps and inspecting the carburetors connected to those fuel pumps for contamination within 5 flight hours after the effective date of this AD. This AD was prompted by reports of fuel pumps having pressure side fuel hoses not meeting the design specification. We are issuing this AD to prevent pressure side fuel hose deterioration and contamination of the carburetor, which could result in an in-flight engine shutdown, forced landing and damage to the airplane.

Which aircraft AD 2012-20748 applies to

MakesRotax

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

Serial-conditional — narrows to serials 11.3117–11.3325, 11.4036–11.4355, 11.4516–11.4595, 12.0251–12.0270.

Part-conditional — 893114.

Applies only when fuel pump P/N 893114 with a serial number in the affected ranges is installed.

Whether AD 2012-20748 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 2012-20748 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.