Eh se aspettano tempo decente a Seattle facciamo che posporre fino a giugno e morta lì.
Infatti mia moglie è la senza ancora aver visto il sole da circa 1 settimana e le previsioni sono pioggia per almeno 1 altra.
Eh se aspettano tempo decente a Seattle facciamo che posporre fino a giugno e morta lì.
Citing a serious flight test incident and lack of design maturity, FAA slows Boeing 777X certification
In yet another blow to Boeing, the Federal Aviation Administration last month formally denied the jet maker permission to move forward with a key step in certifying its forthcoming giant widebody airplane, the 777X.
In a sternly worded letter dated May 13, which was reviewed by The Seattle Times, the FAA warned Boeing it may have to increase the number of test flights planned and that certification realistically is now more than two years out, probably in late 2023.
That could push the jet’s entry into commercial service into early 2024, four years later than originally planned.
The FAA cited a long litany of concerns, including a serious flight control incident during a test flight on Dec. 8, 2020, when the plane experienced an “uncommanded pitch event” — meaning the nose of the aircraft pitched abruptly up or down without input from the pilots.
Boeing has yet to satisfy the FAA that it has fully understood and corrected what went wrong that day.
The letter was signed by Ian Won, the manager of the local FAA office that judges whether Boeing has met all regulatory standards. He also told Boeing that a critical avionics system proposed for the airplane does not meet requirements.
And he expressed concern about proposed modifications involving late changes to both software and hardware in the electronics of the jet’s flight controls.
[...]
Within the FAA, the person said, “there’s a general feeling that Boeing has kind of lost a step,” referring to the slide away from a historic reputation for engineering prowess.
And because of all the missteps, the official added, “the days of Boeing being able to say to the FAA ‘Just trust us’ are long gone.”
[...]
The wording suggests a degree of exasperation with Boeing pushing for TIA when the FAA deems it far from ready.
[...]
Asked about the test flight that experienced the “uncommanded pitch event” in December, Boeing said the plane went on to land safely and that engineers investigated the root cause and have developed a major software update to fix the problem.
[...]
Yet the FAA clearly isn’t satisfied with Boeing’s promise of a software fix.
“After the uncommanded pitch event, the FAA is yet to see how Boeing fully implements all the corrective actions identified by the root cause investigation,” the letter reads.
“Software load dates are continuously sliding and the FAA needs better visibility into the causes of the delays,” it states.
[...]
The FAA separately highlights concern over a critical piece of new avionics on the jet — the Common Core System, a set of shared computing resources critical to the functioning of multiple airplane systems.
Won notes that Galantowicz conceded in a letter to the FAA earlier in May that the CCS has incomplete software and does not meet TIA requirements.
Citing a “lack of data” and the absence of a Preliminary Safety Assessment for the FAA to review, the agency’s letter declares that Boeing hasn’t even met its own process requirements.
[...]
Another problem for the FAA is Boeing’s proposal of late changes to the 777X flight control system.
“Boeing is proposing modifications that will involve firmware and hardware changes to the actuator controls electronics of the Flight Control System,” the FAA states. “Boeing needs to ensure the changes do not introduce new, inadvertent failures modes.”
Other pending modifications to the design of systems around the jet’s horizontal tail or stabilizer, which controls the pitch of the airplane, will change the crew alerts that flag certain system failures.
“Design maturity is in question as design changes are ongoing and potentially significant,” the letter states.
Separately, the letter states in passing that the European Union Aviation Safety Agency (EASA) has also “not yet agreed on a way forward” with regard to 777X certification.
essere acquistata da Airbus?737 MAX, 787 a Charleston, il KC-46, Starliner e ora anche questa... io mi domando cosa deve succedere affinchè qualcosa cambi in Boeing.
737 MAX, 787 a Charleston, il KC-46, Starliner e ora anche questa... io mi domando cosa deve succedere affinchè qualcosa cambi in Boeing.
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Citing a serious flight test incident and lack of design maturity, FAA slows Boeing 777X certification
The FAA has denied Boeing permission to move forward with a key step in certifying its forthcoming 777X jet. It cites a long litany of concerns, including a serious flight control incident on a December test flight.www.seattletimes.com
Come già detto anche qui, che l’ingegneria torni al centro in Boeing spodestando l’usurpatore, ovvero i profitti a qualunque costo.
Fissato il primo aspetto, anche il secondo tornerà a posto.
Concordo, e andrei oltre a dire che e' l'ossessione per le trimestrali, per il dividendo, per il short term profit a dover cambiare.
Io sono un fervente adepto di quel dogma strategico che in poche parole dice che le aziende dovrebbero avere come Mission quella di portare un prodotto, un servizio o - in un'accezione più ampia - una "esperienza" distintiva ai propri clienti. Centrando questa Mission i profitti vengono di conseguenza.
Se invece la Mission diventa direttamente quella di portare a casa profitti, perdendo di vista il "perché siamo sul mercato", il rischio è quello che ha investito Boeing e molte alte prima di lei.
mi domando chi si sbatterà per cambiare i 777-300ER in arsenale prima del tempo.
Boeing è riuscita a perdere JAL ma di clienti che potrebbero aver bisogno dell'aereo entro la fine degli anni venti ce ne sono molti: da British Airways (il cui primo ordine è stato piuttosto modesto) a United, passando per Qantas, AF-KL e Korean.
In cosa?passa il tempo a dire quanto e' sottopotenziato