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Airworthiness Directive 97-07-04

recurring
Official AD 97-07-04 · FR doc 97-8474 · 1997-04-07 · turbine engine

Airworthiness Directives; Rolls-Royce plc RB.211-524 Series Turbofan Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to Rolls-Royce plc RB.211-524 series turbofan engines, that requires initial and repetitive borescope inspections of the head section and meterpanel assembly of the combustion liner, and replacement, if necessary, with serviceable parts. In addition, this AD allows an optional installation of a front combustion liner with a strengthened head section as a terminating action to the inspection requirements. This amendment is prompted by reports of engine fires due to premature engine combustor distress. The actions specified by this AD are intended to prevent engine combustor liner deterioration due to thermal fatigue, which can result in combustor liner and 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 97-07-04 applies to

MakesRolls-Royce
ModelsRB211-524G, RB211-524H, RB211

Applies only to engines that have NOT been modified in accordance with Rolls-Royce Service Bulletin No. RB.211-72-9764, Revision 2, dated November 10, 1995.

Whether AD 97-07-04 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 97-07-04 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.