Is AD 2004-26-05 a recurring Airworthiness Directive?

Yes — AD 2004-26-05 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Airworthiness Directive 2004-26-05

Q: Which aircraft does AD 2004-26-05 apply to?

AD 2004-26-05 applies to Rolls-Royce Plc — models RB211-524B-02, RB211-524B2, RB211-524B3, RB211-524B4, RB211-524C2, RB211-524D4, RB211-524G, RB211-524H. Serial/part conditions may narrow it to specific aircraft.

recurring

Official AD 2004-26-05 · FR doc 05-85 · 2005-01-05 · turbine engine

Airworthiness Directives; Rolls-Royce plc RB211-524 Series Turbofan Engines

What this AD requires

The FAA is superseding an existing airworthiness directive (AD) for certain Rolls-Royce plc (RR) RB211-524 series turbofan engines. That AD currently requires initial and repetitive borescope insepctions of the head section and meterpanel assembly of the combustion liner, and replacement, if necessary, with serviceable parts. In addition, that AD allows an optional installation of a front combustion liner with a strengthened head section as a terminating action to the inspection requirements. This AD requires initial and repetitive borescope inspections of the head section and meterpanel assembly of the combustion liner, and replacement if necessary with serviceable parts. This AD also requires reduction of the inspection intervals of certain RB211-524 engine models that have not been repaired to RR Field Repair Scheme FRS5367/B, and a mandatory terminating action to be completed by a certain date. This AD results from five events that are directly attributed to combustor head breakup and meterpanel failure which were found at overhaul inspection. At least one of these events resulted in a combustion case burn-through. We are issuing this AD to prevent engine combustion liner deterioration, which can result in combustion liner breakup, case burn-through, and engine fire.

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

Which aircraft AD 2004-26-05 applies to

MakesRolls-Royce Plc

ModelsRB211-524B-02, RB211-524B2, RB211-524B3, RB211-524B4, RB211-524C2, RB211-524D4, RB211-524G, RB211-524H, RB211-524

Part-conditional — UL16885, UL29916, UL27107, UL28972, UL28974, UL27659, UL23992, UL22988.

Applies to RB211-524B-02/-524B2/-524B3/-524B4/-524C2/-524D4 engines incorporating RR Service Bulletin (SB) No. RB.211-72-7221 or RB.211-72-7998 with front combustion liner assembly part number UL16885, UL29916, UL27107, UL28972, or UL28974 installed but NOT incorporating RR SB No. RB.211-72-9670 or RB.211-72-9764; and to RB211-524G/-524H engines with front combustion liner assembly part number UL27659, UL23992, or UL22988 installed but NOT incorporating RR SB No. RB.211-72-9764. These engines are installed on, but not limited to, Boeing 747 and Lockheed L1011 series airplanes.

Whether AD 2004-26-05 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 2004-26-05 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.