Airworthiness Directive · Amendment 39-18860 · Engine
Rolls-Royce plc Turbofan Engines
This AD applies to all Rolls-Royce plc (RR) RR RB211-Trent 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17 turbofan engines.
We are superseding airworthiness directive (AD) 2012-04-01 for all Rolls-Royce plc (RR) RB211-Trent 800 model turbofan engines. AD 2012-04-01 required removal from service of certain critical engine rotating parts based on reduced life limits. This AD makes additional revisions to the life limits of certain critical engine rotating parts. This AD was prompted by RR further revising the life limits of certain critical engine rotating parts. We are issuing this AD to correct the unsafe condition on these products.
(1) After the effective date of this AD, remove from service the parts listed in Table 1 to paragraph (f) of this AD before exceeding the new life limit indicated:
| Part nomenclature | Part No. | Life in standard duty cycles | Life in cycles using the HEAVY profile |
|---|---|---|---|
| Intermediate Pressure (IP) Compressor Rotor Shaft | FK24100 | 12,500 | 11,500 |
| IP Compressor Rotor Shaft | FK24496 | 8,860 | 8,180 |
| High-Pressure Compressor (HPC) Stage 1 to 4 Rotor Discs Shaft | FK24009 | 4,560 | 4,460 |
| HPC Stage 1 to 4 Rotor Discs Shaft | FK26167 | 5,580 | 5,280 |
| HPC Stage 1 to 4 Rotor Discs Shaft | FK32580 | 5,580 | 5,280 |
| HPC Stage 1 to 4 Rotor Discs Shaft | FW11590 | 8,550 | 6,850 |
| HPC Stage 1 to 4 Rotor Discs Shaft | FW61622 | 8,550 | 6,850 |
| HPC Stage 5 and 6 Discs and Cone | FK25230 | 5,000 | 5,000 |
| HPC Stage 5 and 6 Discs and Cone | FK27899 | 5,000 | 5,000 |
| IP Turbine Rotor Disc | FK21117 | 11,610 | 10,400 |
| IP Turbine Rotor Disc | FK33083 | 0 | 0 |
(2) Reserved.
After the effective date of this AD, do not install any IP turbine discs, P/N FK33083, into any engine.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Engines
