Hei
Vi i Foreningen Flyprat ønsker takke de av dere som har valgt å være medlem av foreningen gjennom det siste året, og dermed støttet driften av Flyprats forum og Airpics med 150kr.
Vi håper å kunne ha deg videre med til neste år og at du fortsatt vil være medlem nå som nytt medlemsår begynte 1. oktober 2025
Merk at etter årsmøtevedtaket er medlemsavgiften fra og med i år 150krBetalingen kan enten gjøres via Vipps: 150kr til #18641 eller via Letsreg på linken under:
https://www.letsreg.com/no/event/medlemskontingent_2026_01102025
(Husk og oppgi brukernavn så betalingen kan linkes til brukeres)
De av dere som alt har betalt i oktober er selvsagt registrert i det nye medlemsåret
Med vennlig hilsen - Styret i Foreningen Flyprat
Originally posted by Dag Viking
Hva er skandale?
Opplys meg gjerne...
Originally posted by Trety
Flyet tok av fra LAX (etter hva jeg husker) og en motor ble steng av nesten umiddelbart. Allikevel fortsatte flyet over dammen på vei mot LHR, men måtte erklære fuel-emergency på MAN.
Originally posted by Dag Viking
Grunnen til at flyet måtte diverte var at det ikke fikk flightlevel som planlagt (dermed mindre medvind og høyere fuelflow), ikke pga flameout i en motor like etter take-off. I følge jumbokapteiner så er fuelflow med tre motorer ganske tilnærmet lik fuelflow med 4 motorer.
Originally posted by imm
Kjekt med 4 motorer ihvertfall. Så kan jo to gå uten at det skaper farlig situasjon.
Er man oppe i en 777 eller A330 har man bare èn motor som kan gå...
Jeg er ikke sakkyndig her, men når en 777 og en 340 kan krysse atlanteren med 2 motorer, så burde vel en 747 kunne gjøre det med 3. Vel å merke hvis man vet hva som gjorde at den ene motoren gikk føyka.
IMM
Originally posted by Trety
Nå er jeg ikke helt sikker på reglementet her, men det har åpenbart vært regelbrudd i og med at BA blir ilagt bot av FAA. Selv om liv kanskje ikke stod i direkte fare her, synes jeg personlig det er betenkelig at piloten velger å fortsette turen når en motor gir seg rett etter takeoff. Sikkerhetsmargiene på fremdriften er vesentlig redusert og kapteinen burde gått tilbake til LAX eller til andre nærliggende flyplasser umiddelbart.
After doing countless 3 engine ferry flights on the 747/744, personally I have no problem with the decision of the Captain. In reality, there is very little difference in the 3 engine burn vs. the 4 engine burn, the windmilling engine is actually the worst case for increase fuel burn due to the drag from the N1.
Had the crew gotten the routing it was planned for and "normal" winds for the time of year this wouldn't be a big deal. I wonder if the whole event would have been "news worthy" if there had been no engine failure and the crew just landed in MAN due to a fuel problem?
After working for a "legacy" carrier in the US I know of at least 5 incidents of a flight (747/744) continuing on to it's destination after an engine shutdown. Interestingly enough, the FAA didn't do a thing.
If the FAA doesn't like 121.565, then they need to change it. There is a NPRM that would dispatch all flights under EROPS criteria. In reality, I think that is a much better option, but it will cost the airlines $$ due to the increase costs of MX. In the meantime, 121.565 is in force.
LAX-LHR is not a difficult route, long, sometimes. There are alternate airports all the way along the route, some very good alternates. So from that frame of reference the crew felt the risks were minimal. I'd certainly feel more comfortable in that aircraft that I would a 757 from LAX-HNL, where there are enough alternates to fit on a few fingers.
Again, on the 744, the fuel burn on 3 engines isn't too far off what 4 engines would be. If the crew hadn't had any fuel problems caused by the re-route and mis-forcast winds, this whole event would have been a non-event.
As previously mentioned, it common industry knowledge that US registered aircraft in the jet age including 707/DC8/L1011/DC10/MD11/747 have done similar without the same repercussions from the FAA.
The complaint is very clear, the FAA are stating that BA operated an unairworthy aircraft and violated Part 91.7(a). They are not stating that BA violated Part 121.565 (Engine inoperative: Landing; reporting.), or the pilot violated 91.13 (careless or reckless operation).
What is also very clear is the only person who can determine an aircraft is airworthy is the PIC under Part 91.7(b).
The PIC was in contact with BA operations, and BA maintenance. BA maintenance had "real time" access to the status of the aircraft and informed the PIC the aircraft could continue on 3 engines.
The PIC obviously with the information presented to him at the time had the view that the aircraft was airworthy.
In the FAA approved flight manual, it is an approved procedure to takeoff and proceed to a destination on 3 engines. I would suggest that if the FAA considers it airworthy for an aircraft to commence a flight on three engines (with conditions), a flight that commenced on four engines, and subsequently had one shut down could not be seen as less airworthy.
The 744 is very capable on 3 engines, the cruise altitude on 3 engines at 370t would be FL270, at 260t FL360 (assuming ISA+10). Boeing in their FAA approved manuals provide a "ONE ENGINE INOPERATIVE IN-FLIGHT DIVERSION FUEL AND TIME" chart in the FCOM which goes to 5000 nm and 14 hours.
I would suggest that if it were not the intent to continue with one engine inoperative a flight manual limit would be in place, and they would not provide the reference material in the approved manuals.
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