Is AD E6-21185 a recurring Airworthiness Directive?

No — AD E6-21185 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD E6-21185 apply to?

AD E6-21185 applies to Rolls-Royce Corporation — models AE 2100D3, AE 2100. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive E6-21185

one-time

AD E6-21185 · 2006-12-14 · turboprop engine

Airworthiness Directives; Rolls-Royce Corporation AE 2100D3 Turboprop Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for Rolls-Royce Corporation (RRC) AE 2100D3 turboprop engines. This AD requires removing certain part number (P/N) compressor cone shaft assemblies at a new reduced cyclic life limit of 5,000 engine cycles. This AD results from low-cycle-fatigue testing and analysis of certain P/N compressor cone shaft assemblies, by RRC. We are issuing this AD to prevent uncontained failure of the compressor cone shaft assembly, leading to engine shutdown and damage to the airplane.

Which aircraft AD E6-21185 applies to

MakesRolls-Royce Corporation

ModelsAE 2100D3, AE 2100

Part-conditional — 23050728, 23070729, 23076017.

Applies only to engines with compressor cone shaft assembly part number 23050728, 23070729, or 23076017 installed.

Whether AD E6-21185 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 E6-21185 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.