Is AD 2021-15055 a recurring Airworthiness Directive?

No — AD 2021-15055 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2021-15055

Q: Which aircraft does AD 2021-15055 apply to?

AD 2021-15055 applies to Rolls-Royce Deutschland — models BR700-715A1-30, BR700-715B1-30, BR700-715C1-30, BR700. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 2021-15055 · 2021-07-15 · turbine engine

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

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd. & Co KG (RRD) BR700-715A1-30, BR700-715B1-30, and BR700-715C1-30 model turbofan engines. This AD was prompted by reports of HPT stage 1 blades failing in service due to sulphidation and subsequent crack initiation. This AD requires removal and replacement of the HPT stage 1 blade and HPT stage 1 blade damper. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-15055 applies to

MakesRolls-Royce Deutschland

ModelsBR700-715A1-30, BR700-715B1-30, BR700-715C1-30, BR700

Part-conditional — BRH17133, BRH19984, BRH20011, BRH20237, BRH20351, FW35594, FW45914, FW64379.

Applies only to engines with an HPT stage 1 blade (P/N BRH17133, BRH19984, BRH20011, BRH20237, BRH20351, FW35594, FW45914, FW64379, or FW75735) and an HPT stage 1 blade damper (P/N BRH10943, BRH20353, or FW45770) both installed.

Whether AD 2021-15055 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 2021-15055 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.