framedforlife
New Member
your flying the Carmen 4 approach to Kennedy and suddenly in between the SIE and ACY vortacs you lose 3 of your 4 engines. Ditch in the ocean or land at KACY on Runway 31?
747-400 Engine out
- Thread starter framedforlife
- Start date
cmill
Cold Ass Honky
Must have vapor locked
Alchemy
Well-Known Member
I'll bite.
I just flew that arrival last night in a 747-400; luckily all the engines kept turning.
The decision would depend on your altitude. Between SIE and ACY you would normally still be at about FL250, which gives you at least a very conservative 75NM range. ACY, WRI, and DOV would all be decent options, I guess.
You'd want to stay in the engine start envelope speed-range for a few minutes while you run the multiple engine flameout/stall checklist and attempt to get your failed engines running again. At some point, if you're unsuccessful, you'll slow to your drift down speed while you fly toward your selected diversionary airport. If you get one or more engines restarted, the airplane will be able to maintain altitude before hitting sea level so you gain more time.
On one engine obviously you're going to need to manage your energy very carefully, but most of your critical systems should be functioning normally. I don't see a need to resort to ditching unless you get into a situation where there's no alternative.
That's just my opinion. This isn't an oft-addressed scenario in 4 engine jets, because the odds that 3 would fail and you'd be unable to restart at least one of them are pretty slim.
I just flew that arrival last night in a 747-400; luckily all the engines kept turning.
The decision would depend on your altitude. Between SIE and ACY you would normally still be at about FL250, which gives you at least a very conservative 75NM range. ACY, WRI, and DOV would all be decent options, I guess.
You'd want to stay in the engine start envelope speed-range for a few minutes while you run the multiple engine flameout/stall checklist and attempt to get your failed engines running again. At some point, if you're unsuccessful, you'll slow to your drift down speed while you fly toward your selected diversionary airport. If you get one or more engines restarted, the airplane will be able to maintain altitude before hitting sea level so you gain more time.
On one engine obviously you're going to need to manage your energy very carefully, but most of your critical systems should be functioning normally. I don't see a need to resort to ditching unless you get into a situation where there's no alternative.
That's just my opinion. This isn't an oft-addressed scenario in 4 engine jets, because the odds that 3 would fail and you'd be unable to restart at least one of them are pretty slim.
Cessnaflyer
Wooooooooooooooooooooooooooooooo
Ice in the engines like BA's 777.
framedforlife
New Member
Inhaled three birds Canadian geese into the three engines each
and also you have a bad headwind
Tommay85
Well-Known Member
Sounds easier said than done with something that big, and I imagine, isolated and numb.(?)
BobDDuck
Island Bus Driver
In pretty much ANY plane (except for one on floats I guess) I'd rather touch down on a runway that may not be long enough and plow off the end at a slow(er) airspeed than try to land on the backside of a wave.
Brn N Rubr
Well-Known Member
Try the 747 Test Flight in the missions section in FSX....
crazyjaydawg
Well-Known Member
Those damn canadian geese flying with their supplemental oxygen again. If I ever hit one at FL250, I'd buy me a powerball ticket as soon as I found terra firma
Cessnaflyer
Wooooooooooooooooooooooooooooooo
rframe
pǝʇɹǝʌuı
Good grief, I remember flying around the Diablos in California and seeing on the sectional a warning about flying too low as it's a danger to hit the California Condor. I never realized how ugly they are.
crazyjaydawg
Well-Known Member
The article states that they can fly up to 15,000'. Although impressive, it's still 10k short of 25,000' and it's not a Canada goose as presented to us by the OP. There is a goose that regularly migrates over the Himalayas (http://en.wikipedia.org/wiki/Bar-headed_Goose) but that wouldn't be found on the CAMRN 4 arrival into JFK. I seem to remember that Canada geese have been reported up to 10,000'.
ljg
Well-Known Member
Just cuious...Do you guys have any 3EO data? Haven't seen anything anywhere. Driftdown for 2EO even at roughly 800,000 lbs and hot puts you at a level-off above 10k.
And you're right on - Speedbird lost all 4 over Jakarta and KLM lost all 4 over Anchorage due to ash.
