Airworthiness Directive · Amendment 39-16707 · Rolls-Royce plc (RR) RB211-535 Series Turbofan Engines
Rolls-Royce plc (RR) RB211-535 Series Turbofan Engines
Superseded. A later AD replaced this one: AD 2012-02-11. Comply with the one in force.
This AD applies to Rolls-Royce plc RB211-535E4-37, -535E4-B-37, -535E4-B-75, and -535E4-C-37 turbofan engines. These engines are installed on, but not limited to, Boeing 757-200 series, -200PF series, -200CB series, and -300 series airplanes and Tupolev Tu204 series airplanes.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following actions.
(1) At the next engine shop visit after the effective date of this AD, perform a visual and a fluorescent penetrant inspection (FPI) of the LP turbine stage 1, 2, and 3 disc.
(2) At each engine shop visit after accumulating 1,500 cycles since the last inspection of the LP turbine stage 1, 2 and 3 discs, repeat the inspections specified in paragraph (e)(1) of this AD.
(3) If you find cracks, remove the disc from service.
For the purpose of this AD, an “engine shop visit” is:
(1) Induction of an engine into the shop for maintenance involving the separation of the intermediate-pressure/low-pressure (IP/LP) turbine module from the engine, or
(2) Separation of the IP turbine case from the combustion outer case, or
(3) Separation of the LP turbine case from the IP turbine case, except that the separation of engine flanges solely for the purposes of transportation without subsequent engine maintenance does not constitute an engine shop visit.
(g) Engines that have been approved for return to service but are still physically in the shop are not considered to be in the shop.
This AD differs from the Mandatory Continuing Airworthiness Information (MCAI) and or service information as follows in that while the MCAI compliance requires action at a current shop visit, this AD requires compliance at the next shop visit after the effective date of this AD.
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
