TailplateTailplate
Run a report

Airworthiness Directive 2012-6995

one-time
AD 2012-6995 · 2012-03-23 · turbine engine

Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Rolls-Royce Deutschland (RRD) Models Tay 611-8 and Tay 611-8C turbofan engines. This AD requires replacement of the high-pressure (HP) turbine spanner retaining nut. This AD was prompted by the discovery that certain HP turbine spanner retaining nuts were improperly heat treated after application of silver plating. We are issuing this AD to prevent failure of the HP turbine stage 2 disc, uncontained engine failure, and damage to the airplane.

Which aircraft AD 2012-6995 applies to

MakesRolls-Royce Deutschland Ltd & Co Kg
ModelsTAY 611-8, TAY 611-8C, TAY
Serial-conditional — narrows to serials 16870–16870, 16879–16879, 16880–16880, 16897–16897, 18046–18046, 18051–18051, 18052–18052, 18053–18053, 18058–18058, 18065–18065, 18066–18066, 18169–18169, 18194–18194, 85313–85313.

Applies only to the specific engine serial numbers listed (13 discrete S/Ns for TAY 611-8: 16870, 16879, 16880, 16897, 18046, 18051, 18052, 18053, 18058, 18065, 18066, 18169, 18194; one S/N, 85313, for TAY 611-8C) — not all TAY 611-8/611-8C engines.

Whether AD 2012-6995 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 2012-6995 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.