Airworthiness Directive · Amendment 39-19393 · Engine controls
Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines
This AD applies to:
(1) Rolls-Royce Deutschland Ltd & Co KG (RRD) BR700-710A2-20 turbofan engines with any electronic engine controller (EEC) firebox assembly installed, with any of the following component part numbers (P/Ns): FW42888, FW42886, FW38590, FW38591, or FW58255.
(2) RRD BR700-710C4-11 turbofan engines with any EEC firebox assembly installed, with any of the following component P/Ns: FW38504, FW38503, FW38590, FW38591, or FW58255.
We are adopting a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) BR700-710A2-20 and BR700- 710C4-11 turbofan engines. This AD was prompted by reports of deterioration of the intumescent heat resistant paint system on the electronic engine controller (EEC) firebox assembly that was found to be beyond acceptable limits. This AD requires replacement of affected EEC firebox assembly parts with improved parts, which have a more durable paint system. We are issuing this AD to address the unsafe condition on these products.
(1) Within 28 months after the effective date of this AD, perform the following:
(i) For RRD BR700-710A2-20 engines, remove from service the EEC firebox assembly components with P/N FW42888, FW42886, FW38590, FW38591, and FW58255, and replace with parts eligible for installation.
(ii) For RRD BR700-710C4-11 engines, remove from service the EEC firebox assembly components with P/N FW38504, FW38503, FW38590, FW38591, and FW58255, and replace with parts eligible for installation.
(2) Reserved.
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.
