Is AD 2004-23-03 a recurring Airworthiness Directive?

Yes — AD 2004-23-03 requires a repetitive inspection every 3 months. Next-due depends on the aircraft's time in service.

Airworthiness Directive 2004-23-03

Q: Which aircraft does AD 2004-23-03 apply to?

AD 2004-23-03 applies to Rolls-Royce Plc — models RB211 Trent 768-60, RB211 Trent 772-60, RB211 Trent 772B-60, RB211 Trent. Serial/part conditions may narrow it to specific aircraft.

recurring

Official AD 2004-23-03 · FR doc 04-24817 · 2004-11-08 · turbine engine

Airworthiness Directives; Rolls-Royce plc RB211 Trent 700 Series Turbofan Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for Rolls-Royce plc (RR) RB211 Trent 700 series turbofan engines. This AD requires initial and repetitive borescope inspections of the high pressure-and-intermediate pressure (HP-IP) turbine internal and external oil vent tubes for coking and carbon buildup, and cleaning or replacing the vent tubes if necessary. This AD results from a report of a RB211 Trent 700 series engine experiencing a disk shaft separation, overspeed of the IP turbine rotor, and multiple blade release of IP turbine blades. Preliminary findings suggest these events resulted from an internal oil fire in the HP-IP turbine oil vent tubes due to coking and carbon buildup. This fire led to a second fire in the internal air cavity below the IP turbine disk drive shaft. We are issuing this AD to prevent internal oil fires due to coking and carbon buildup, that could cause uncontained engine failure and damage to the airplane.

Repetitive inspection. Re-inspect every 3 months. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2004-23-03 applies to

MakesRolls-Royce Plc

ModelsRB211 Trent 768-60, RB211 Trent 772-60, RB211 Trent 772B-60, RB211 Trent

Whether AD 2004-23-03 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 2004-23-03 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.