Trent 1000 TEN Woes Force SIA To Ground Two 787-10s

 - April 2, 2019, 3:05 PM

Singapore Airlines has found premature blade deterioration on some Rolls-Royce Trent TEN turbofans powering its Boeing 787-10s, forcing the carrier to ground two of the biggest Dreamliners. The airline said it found the problem during routine inspections and has “proactively identified” other Trent 1000 TEN engines in the group’s 787 fleet to undergo precautionary inspections. It has completed all inspections on the mainline’s 787-10 fleet and plans to finish a remaining check on a 787-9 flown by low-cost subsidiary Scoot by tomorrow.

The removal from service of the two airplanes has affected some destinations served by the 787-10, said SIA, which added that it would operate other aircraft on those services to minimize schedule disruptions. It cautioned, however, that because the replacement airplanes might carry less capacity, some passengers might experience travel "inconveniences."

“SIA is working closely with Rolls-Royce and the relevant authorities for any additional follow-up actions and precautionary measures that may be required going forward,” said the airline.

Last year durability concerns centering on the TEN’s precursor—the Trent 1000—prompted the UK engine maker to further reduce the life of intermediate-pressure turbine blades in certain Package C engines to avoid premature failure. Company guidance to operators issued last September required removal of some 30 to 40 engines sooner than expected. That problem did not affect most of the population of Package C engines, however, because Rolls already had fitted a new standard of blade in them as part of an earlier effort to mitigate durability deficiencies.

That snag involving the Trent 1000 came less than three months after Rolls launched a “precautionary” redesign in the intermediate-pressure compressor in the Package B and Trent 1000 TEN engines, adding another dimension to a saga that began in mid-2016 with the well-publicized afflictions involving Package C engines in Boeing 787s operated by All Nippon Airways. Since the problems first came to light, some 15 airlines felt some effect, most notably ANA, LATAM, Virgin Atlantic, British Airways, Norwegian, and Air New Zealand.

Comments

Best to give the pertinent facts.
More than a year ago, RR stated that they had not seen any durability issues with Trent 1000 TEN, a younger engine. BUT RR had taken precautions to design & introduce a new standard of blade to this engine type ( to be available in 2019).

During recent routine inspections of RR T-1000 TEN engines on SIA’s B787-10 fleet, premature blade deterioration was found on some engines. It was recently confirmed that RR had said that, since T- 1000 TEN’s EIS, it has informed operators that the HPT turbine blades in those early engines would have a limited life.

Working with operators, RR have been sampling a small portion of the T-1000 TEN fleet that has flown in more arduous conditions. This effort has shown that a small number of these engines need to have their blades replaced earlier than initially scheduled. No big deal. No woes. All was anticipated. In line with this announced limited turbine blade life, RR is now working closely with customers to deliver an "accelerated programme"of implementation of the enhanced blade

Objectivity, and abandonment of double-standards, please :
It is amazing how a minor event, Under control, involving RR T-1000 engines on B787 is ubduly exaggerated, whilst a potentially far more serious event concerning rival GEnx-1B goes almost unnoticed.

Japanese investigators are probing aloss of thrust in both engines (dual roll-back) on a Jetstar Boeing 787-8 during its approach to Osaka’s Kansai airport.
The aircraft had departed Cairns on 29 March and was descending through 4,900m (16,100ft) at around 18:50 when the starboard engine’s indicated readings became “unstable”, says the Japan Transport Safety Board.
This incident illustrates precisely why FAA is unwilling to accept a 'software fix' for such a problem on the engines involved. FAA is demanding a permanant solution.

On a fairly recent ANA case (dual cut-out / roll-back, on the ground), there was NO engine issue.
There has been no attempt even to impute any cause, fundamental or other, to the RR-T-1000 engines in this event.

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