AD 2021-21-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Rolls-Royce Deutschland GmbH | Various | Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce Deutschland GmbH, Formerly BMW Rolls-Royce GmbH) Turbofan Engines |
| engine | Rolls-Royce | Deutschland GmbH | Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce Deutschland GmbH, Formerly BMW Rolls-Royce GmbH) Turbofan Engines |
Unsafe Condition
significant oscillation of the engine rotor revolution speed during flight, which affects the service life of the affected life-limited parts (LLPs)
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
initial and repetitive recalculation of the consumed and remaining service life of certain LLPs, and removal of an LLP prior to its approved life limit or within 90 days after the effective date of this AD, whichever occurs later
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
Rolls-Royce Deutschland Ltd & Co KG (RRD) BR700-710A2-20 model turbofan engines
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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