Is AD 2008-22-24 a recurring Airworthiness Directive?

Yes — AD 2008-22-24 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2008-22-24 apply to?

AD 2008-22-24 applies to Rolls-Royce — models RB211-535E4-37, RB211-535E4-B-37, RB211-535E4-B-75, RB211-535E4. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2008-22-24

recurring

Official AD 2008-22-24 · FR doc E8-25891 · 2008-11-04 · turbine engine

Airworthiness Directives; Rolls-Royce plc RB211-535E4-37, RB211-535E4-B-37, and RB211-535E4-B-75 Series Turbofan Engines

What this AD requires

The FAA is superseding an existing airworthiness directive (AD) for Rolls-Royce plc (RR) RB211-535E4-37, RB211-535E4-B-37, and RB211-535E4-B-75 series turbofan engines. That AD currently requires initial and repetitive ultrasonic inspections of installed low pressure compressor (LPC) fan blade roots on-wing and during overhaul, and relubrication according to accumulated life cycles. Also, that AD introduces application of Metco 58 blade root coating as an optional terminating action. This AD requires the same actions but adds compliance paragraphs to relax the compliance schedule for repetitive inspections for fan blades operating within RB211-535E4 flight profiles A and B, if certain requirements are met. This AD also relaxes the initial compliance threshold by extending the cycles at which an initial inspection is required. This AD results from RR issuing Mandatory Service Bulletin (MSB) No. RB.211-72-C879, Revision 5 and Revision 6, that introduced a relaxed repetitive compliance schedule for fan blades operating within RB211-535E4 flight profiles A and B, if certain requirements are met, and introduced a relaxed initial compliance threshold. We are issuing this AD to detect cracks in LPC fan blade roots, which if not detected, could lead to uncontained multiple fan blade failure, and damage to the airplane.

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 2008-22-24 applies to

MakesRolls-Royce

ModelsRB211-535E4-37, RB211-535E4-B-37, RB211-535E4-B-75, RB211-535E4

Part-conditional — UL16135, UL16171, UL16182, UL19643, UL20044, UL20132, UL20616, UL21345.

Applies only to engines with low pressure compressor (LPC) fan blades having part numbers listed in Table 1 of the AD. Installed on, but not limited to, Boeing 757 and Tupolev Tu204 series airplanes.

Whether AD 2008-22-24 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 2008-22-24 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.