Airworthiness Directive · Amendment 39-17167 · Rolls-Royce plc Turbofan Engines
Rolls-Royce plc Turbofan Engines
This AD applies to Rolls-Royce plc (RR) RB211-Trent 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17 turbofan engines that have an intermediate pressure (IP) turbine disc with a serial number listed in Table 1 to paragraph (e) of this AD, installed.
We are adopting a new airworthiness directive (AD) for all Rolls-Royce plc (RR) RB211-Trent 800 series turbofan engines. This AD requires removing from service certain intermediate pressure (IP) turbine discs that have a serial number listed in this AD. This AD was prompted by RR performing an evaluation that determined that the current lives for certain IP turbine discs with a steel inclusion may fail before they reach their current mandatory life limits. We are issuing this AD to prevent failure of the IP turbine disc, which could result in uncontained failure of the engine and damage to the airplane.
Unless already done, do the following. Remove disc serial numbers (S/Ns) listed in Table 1 to paragraph (e) of this AD within 9,700 standard duty cycles since new.
| IP Turbine Disc S/N |
|---|
| ADREB 73 |
| ADREB 79 |
| ADREB 80 |
| ADREB 81 |
| ADREB 82 |
| ADREB 83 |
| ADREB 84 |
| ADREB 85 |
| ADREB 86 |
| ADREB 87 |
| ADREB 88 |
| ADREB 89 |
| ADREB 90 |
| ADREB 91 |
| ADREB 92 |
| ADREB 94 |
| ADREB 96 |
| ADREB 102 |
| ADREB 103 |
| ADREB 104 |
After the effective date of this AD, do not install any IP and Low Pressure (LP) turbine module on any engine with an IP turbine disc with an S/N listed in Table 1 to paragraph (e) of this AD if the life of the disc is equal to or greater than 9,700 standard duty cycles since new. After the effective date of this AD, do not install any IP turbine disk listed in Table 1 to paragraph (e) of this AD if the life of the disk is equal to or greater than 9,700 standard duty cycles since new.
For the purposes of this AD, a shop visit is one where the IP and LP turbine module has been removed from the 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
