Is AD 2012-16797 a recurring Airworthiness Directive?

No — AD 2012-16797 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2012-16797 apply to?

AD 2012-16797 applies to Rolls-Royce Corporation — models 250-C20, 250-C20B, 250-C20R/2, 250. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2012-16797

one-time

AD 2012-16797 · 2012-07-10 · turboshaft engine

Airworthiness Directives; Rolls-Royce Corporation Turboshaft Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Rolls-Royce Corporation (RRC) 250-C20, -C20B, and -C20R/2 turboshaft engines. This AD was prompted by seven cases reported of released turbine blades and shrouds, which led to loss of power and engine in- flight shutdowns (IFSDs). This AD requires a one-time visual inspection and fluorescent penetrant inspection (FPI) on certain 3rd and 4th stage turbine wheels for cracks in the turbine blades. We are issuing this AD to prevent failure of 3rd or 4th stage turbine wheel blades which could cause engine failure and damage to the airplane.

Which aircraft AD 2012-16797 applies to

MakesRolls-Royce Corporation

Models250-C20, 250-C20B, 250-C20R/2, 250

Part-conditional — 23065818, 23055944.

Applies only to engines with 3rd stage turbine wheel P/N 23065818 and 4th stage turbine wheel P/N 23055944 installed.

Whether AD 2012-16797 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 2012-16797 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.