Is AD 98-09-27 a recurring Airworthiness Directive?

Yes — AD 98-09-27 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 98-09-27 apply to?

AD 98-09-27 applies to Rolls-Royce — models Trent 768, Trent 772, Trent. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-09-27

recurring

Official AD 98-09-27 · FR doc 98-11437 · 1998-05-06 · turbine engine

Airworthiness Directives; Rolls-Royce, plc RB211 Trent 768 and 772 Series Turbofan Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to Rolls-Royce, plc RB211 Trent 768 and 772 series turbofan engines. This action requires initial and repetitive visual inspections of thrust reverser hinge lugs and attachment ribs for cracks, and, if necessary, removal from service and replacement with serviceable parts. This amendment is prompted by aircraft certification testing which revealed that stresses on the thrust reverser hinge were higher than had been anticipated during engine certification. The actions specified in this AD are intended to prevent thrust reverser hinge failure, possibly resulting in liberation of the thrust reverser cowl duct from the engine nacelle, which could result in impact damage to other sections of the aircraft.

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 98-09-27 applies to

MakesRolls-Royce

ModelsTrent 768, Trent 772, Trent

Installed on but not limited to Airbus A330-341 and A330-342 series aircraft.

Whether AD 98-09-27 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 98-09-27 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.