Airworthiness Directive · Amendment 39-13802 · Rolls-Royce plc RB211 Trent 800 Series Turbofan Engines
Rolls-Royce plc RB211 Trent 800 Series Turbofan Engines
This AD applies to Rolls-Royce plc (RR) RB211 Trent 800 series turbofan engines. These engines are installed on, but not limited to, Boeing 777 airplanes.
The FAA is adopting a new airworthiness directive (AD) for Rolls-Royce plc (RR) RB211 Trent 800 series turbofan engines. This AD requires revising the Time Limits Manual for RR RB211 Trent 800 series turbofan engines. These revisions include required enhanced inspection of selected critical life-limited parts at each piece-part exposure. This AD results from the need to require enhanced inspection of selected critical life-limited parts of RB211 Trent 800 series turbofan engines. We are issuing this AD to prevent failure of critical life- limited rotating engine parts, which could result in an uncontained engine failure and damage to the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done.
(f) Within the next 40 days after the effective date of this AD, revise the Time Limits Manual (TLM), and for air carrier operations revise the approved continuous airworthiness maintenance program, by adding the following:
(1) Inspections referred to as ‘Focus Inspect’ in the applicable Engine Manual inspection Task are mandatory inspections for the components given below, when the conditions that follow are satisfied:
(i) When the component has been completely disassembled to piece-part level as given in the applicable disassembly procedures contained in the Engine Manual; and
(ii) The part has more than 100 recorded flight cycles in operation since the last piece-part inspection. or
(iii) The component removal was for damage or a cause directly related to its removal; or
(iv) Where serviceable used components, for which the inspection history is not fully known, are to be used again.
(2) The list of Group A Parts is specified below:
| Part nomenclature | Part number | Inspected per overhaul manual task |
|---|---|---|
| Low Pressure Compressor Rotor Disc | All | 72-31-16-200-801 |
| Low Pressure Compressor Rotor Shaft | All | 72-31-20-200-801 |
| Intermediate Pressure Compressor Rotor Shaft | All | 72-32-31-200-801 |
| Intermediate Pressure Rear Shaft | All | 72-33-21-200-801 |
| High Pressure Compressor Stage 1 to 4 Rotor Discs Shaft | All | 72-41-31-200-801 |
| High Pressure Compressor Stage 5 & 6 Discs and Cone | All | 72-41-31-200-802 |
| High Pressure Turbine Rotor Disc | All | 72-41-51-200-801 |
| Intermediate Pressure Turbine Rotor Disc | All | 72-51-31-200-801 |
| Intermediate Pressure Turbine Rotor Shaft | All | 72-51-33-200-801 |
| Low Pressure Turbine Stage 1 Rotor Disc | All | 72-52-31-200-801 |
| Low Pressure Turbine Stage 2 Rotor Disc | All | 72-52-31-200-802 |
| Low Pressure Turbine Stage 3 Rotor Disc | All | 72-52-31-200-803 |
| Low Pressure Turbine Stage 4 Rotor Disc | All | 72-52-31-200-804 |
| Low Pressure Turbine Stage 5 Rotor Disc | All | 72-52-31-200-805 |
| Low Pressure Turbine Rotor Shaft | All | 72-52-33-200-801” |
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.
