Is AD 97-02-12 a recurring Airworthiness Directive?

No — AD 97-02-12 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 97-02-12 apply to?

AD 97-02-12 applies to Rolls-Royce — models RB211-535E4, RB211-535E4-B, RB211. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 97-02-12

one-time

Official AD 97-02-12 · FR doc 97-1701 · 1997-02-03 · turbine engine

Airworthiness Directives; Rolls-Royce plc RB211-535E4 and -535E4- B Series Turbofan Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to Rolls-Royce plc RB211-535E4 and -535E4-B series turbofan engines, that requires installation of an improved fuel flow governor that incorporates revised minimum compressor discharge P4 stop settings. This amendment is prompted by reports of engine rundowns during low idle descent during icing conditions. The actions specified by this AD are intended to prevent compressor stall and subsequent engine rundown on one or both engines.

Which aircraft AD 97-02-12 applies to

MakesRolls-Royce

ModelsRB211-535E4, RB211-535E4-B, RB211

Whether AD 97-02-12 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 97-02-12 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.