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Unexplained Trent 1000 surges spur de-pair order to 787 operators


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By David Kaminski-Morrow

24 January 2020

 

Rolls-Royce is investigating further operational issues with Trent 1000 engines, after instances of surges involving certain powerplants – a situation which has triggered a de-pairing order from European regulators.

Trent 1000s, which are fitted to Boeing 787s, have already been the subject of several regulatory interventions, particularly as a result of problems with blade durability.

But the surge occurrences appear to be a separate issue. “Investigation into the cause [or causes] of these events is ongoing,” says the European Union Aviation Safety Agency.

EASA says the engine surges have particularly affected engines which have accumulated a high number of cycles and flight hours.

It says there is a risk of dual engine surge, possibly leading to a dual engine shutdown.

Rolls-Royce has drawn up a service bulletin giving instructions to de-pair certain engines in order to reduce the risk of a dual surge incident.

EASA is mandating this de-pairing scheme through an airworthiness directive which takes effect on 30 January.

It says Trent 1000s with over 24,000h or more than 8,000 cycles cannot be paired with a similar engine, but can be paired with engines which have fewer than 17,000h and 5,500 cycles.

But engines which have logged both 24,000h and 8,000 cycles can be paired with engines which have reached neither of these thresholds.

EASA has ordered any necessary de-pairing to be carried out within 30 days.

 

https://www.flightglobal.com/news/unexplained-trent-1000-surges-spur-de-pair-order-to-787-operators/136365.article

 

Vão ter que comprar + motores sobressalentes.

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Rolls Royce tem histórico na aviação de desenvolver motores para aviação civil que dificultam a vida dos fabricantes e operadores das aeronaves.

 

Senão me engano o L1011- Tristar, teve muitas dificuldades de venda por ter no inicio sido projetado para trabalhar com motores Rolls Royce e os motores terem apresentado problemas.

 

Um abraço.

 

 

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18 hours ago, TheJoker said:

By David Kaminski-Morrow

24 January 2020

 

Rolls-Royce is investigating further operational issues with Trent 1000 engines, after instances of surges involving certain powerplants – a situation which has triggered a de-pairing order from European regulators.

Trent 1000s, which are fitted to Boeing 787s, have already been the subject of several regulatory interventions, particularly as a result of problems with blade durability.

But the surge occurrences appear to be a separate issue. “Investigation into the cause [or causes] of these events is ongoing,” says the European Union Aviation Safety Agency.

EASA says the engine surges have particularly affected engines which have accumulated a high number of cycles and flight hours.

It says there is a risk of dual engine surge, possibly leading to a dual engine shutdown.

Rolls-Royce has drawn up a service bulletin giving instructions to de-pair certain engines in order to reduce the risk of a dual surge incident.

EASA is mandating this de-pairing scheme through an airworthiness directive which takes effect on 30 January.

It says Trent 1000s with over 24,000h or more than 8,000 cycles cannot be paired with a similar engine, but can be paired with engines which have fewer than 17,000h and 5,500 cycles.

But engines which have logged both 24,000h and 8,000 cycles can be paired with engines which have reached neither of these thresholds.

EASA has ordered any necessary de-pairing to be carried out within 30 days.

 

https://www.flightglobal.com/news/unexplained-trent-1000-surges-spur-de-pair-order-to-787-operators/136365.article

 

Vão ter que comprar + motores sobressalentes.

Alem de comprar + motores pode ser necessário  implementar processos de logística para as equipes de manutenção removerem os motores com 24000FH ou mais de 8000 ciclos e instalarem motores com menos de 17000FH e 5500 ciclos.

 

Trabalho extra que vai tornando os custos de operação maiores e provavelmente o bilhete mais caro.

 

Um abraço.

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