Is AD 2020-07675 a recurring Airworthiness Directive?

Yes — AD 2020-07675 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2020-07675 apply to?

AD 2020-07675 applies to Rolls-Royce — models 535E4-37, 535E4-B-37, 535E4-C-37, 535E4-B-75, RB211. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2020-07675

recurring

AD 2020-07675 · 2020-04-13 · turbine engine

Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce plc) Turbofan Engines

What this AD requires

The FAA is superseding Airworthiness Directive (AD) 2008-22-24 for certain Rolls-Royce Deutschland Ltd. & Co KG (RRD) RB211-535E4-37, RB211-535E4-B-37, and RB211-535E4-B-75 model turbofan engines. AD 2008- 22-24 required initial and repetitive ultrasonic inspections (USIs), both on-wing and during overhaul, to detect cracks on the installed low-pressure compressor (LPC) fan blade roots. AD 2008-22-24 also required re-lubrication of the fan blade roots according to accumulated life cycles. This AD retains the requirements of AD 2008-22-24 and extends these requirements to engines operating under additional flight profiles and adds the RB211-535E4-C-37 model turbofan engines to the applicability of this AD. This AD requires initial and repetitive USIs to detect cracks on the installed LPC fan blade roots, both on-wing and at engine overhaul, and replacement of certain blades that exceed the criteria established by the manufacturer. This AD was prompted by small cracks found in the LPC fan blade roots on the concave root flank during an engine overhaul. The FAA is issuing this AD to address the unsafe condition on these products.

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 2020-07675 applies to

MakesRolls-Royce

Models535E4-37, 535E4-B-37, 535E4-C-37, 535E4-B-75, RB211

Applies to all listed engine models except those with fan blades that have all incorporated Rolls-Royce Service Bulletin RB.211-72-C946, Revision 4, dated June 22, 2010 (or any earlier revision).

Whether AD 2020-07675 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

Supersession

Supersedes AD 2008-22-24.

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 2020-07675 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.