AD 2017-19-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Rolls-Royce | Deutschland Ltd & Co KG Turbofan | Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines |
Unsafe Condition
Failure to replace a HPC stage 12 rotor disc P/N JR18449 before exceeding the thresholds defined by this AD could lead to an uncontained HPC stage 12 rotor disc failure, possibly resulting in damage to, and/or reduced control of, the aeroplane.
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Required Actions
Within 30 days after the effective date, determine whether the HPC stage 12 rotor disk has operated in both flight profiles A and B. If so, re-calculate the consumed cyclic life using 16,700 flight cycles (FC) as the maximum approved life limit for flight profile B. For engines operating in flight profile B, remove the affected rotor disk from service before the re-calculated consumed cyclic life exceeds the thresholds defined in Figure 1.
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Compliance Time
Within 30 days after the effective date
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Affected Aircraft
Rolls-Royce Deutschland Ltd & Co KG model Tay 620-15 turbofan engines with HPC modules M03100AA, M03100AB, or M03100AC and HPC stage 12 rotor disk, part number JR18449, installed.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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