Rolls-Royce Tay problem solved for G-IV operators

London
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This story is sourced from Flight International
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The recent emergency airworthiness directive (EAD) relating to some Rolls-Royce Tay 611 turbofans has not resulted in any groundings for the nine Gulfstream G-IV customers affected, the engine manufacturer says.

The European Aviation Safety Agency EAD allows for 20 flight cycles before the necessary rectification is carried out and, as Rolls-Royce points out, with the low utilisation rates of most business aviation aircraft, that provides plenty of time for the work to be carried out.

"Certain Stage 2 high-pressure turbine disc spanner retaining nuts did not receive the proper heat treatment after application of silver plating," the EASA directive states.

Meanwhile, Rolls-Royce says it has identified all 14 of the engines affected, and has traced the fault to an incomplete procedure following overhaul at a specific aircraft maintenance subcontractor.