AD 2012-04-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Rolls-Royce | plc (RR) Turbofan | Airworthiness Directives; Rolls-Royce plc (RR) Turbofan Engines |
Unsafe Condition
Cracks in the HP compressor stage 1 and 2 disc posts could result in failure of the disc post and HP compressor blades, release of uncontained engine debris, and damage to the airplane.
Required Actions
Inspect the axial dovetail slots at the first shop visit after accumulating 1,000 cycles-since-new on the stage 1 to 4 rotor discs or at the next shop visit after the effective date of this AD, which ever occurs later. Follow-on corrective action depending on findings.
Compliance Time
Within 50 flight hours
Affected Aircraft
Rolls-Royce plc (RR) model RB211-524G2-T-19, -524G3-T-19, -524H-T-36, and -524H2-T-19; and RB211-Trent 553-61, 553A2-61, 556-61, 556A2-61, 556B-61 556B2-61, 560-61, 560A2-61; RB211-Trent 768-60, 772-60, 772B-60; and RB211-Trent 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17 turbofan engines that have a high-pressure (HP) compressor stage 1 to 4 rotor disc with a part number (P/N) listed in Table 1 of this AD.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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