AD 2009-20-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Rolls-Royce | plc (RR) RB211-535E4 Series Turbofan | Airworthiness Directives; Rolls-Royce plc (RR) RB211-535E4 Series Turbofan Engines |
Unsafe Condition
Cracks in the outer combustion case could lead to an uncontained outer combustion case burst, which could result in damage to the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the outer combustion casing using RR MSB RB.211-72-7775, Revision 3, dated April 9, 1999. Replace the case before further flight if cracks of 1.5 inches or more in length are detected. Perform repetitive inspections based on crack size and inspection intervals specified in the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 cycles-in-service (CIS) after the effective date of this AD for cases with more than 1,500 cycles-since-new (CSN) on the effective date. Before accumulating 1,500 CSN for cases with 1,500 or fewer CSN on the effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
RR models RB211-535E4-37, RB211-535E4-B-37, and RB211-535E4-B-75 turbofan engines that don't incorporate RR Service Bulletin (SB) RB.211-72-8045. These engines are installed on, but not limited to, Boeing 757 and Tupolev Tu204 airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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