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Aaron747
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Strange JAL 747 Video Of Takeoff In Snow

Tue Feb 06, 2007 11:41 pm

Came across this video of a JAL 743 at Sapporo the other day and I'm curious as to why the flight controls check and lowering of the flaps basically occurred in the final moments before takeoff. Just a case of the crew being rather late with pre-departure checklists or is this some kind of winter SOP?

http://www.flightlevel350.com/Aircra...nes_-_JAL_Aviation_Video-7900.html
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vikkyvik
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RE: Strange JAL 747 Video Of Takeoff In Snow

Tue Feb 06, 2007 11:45 pm

I'm not sure, but I would assume that lowering the flaps late would be to prevent FOD (snow and ice, presumably) from being thrown up into the flap mechanisms.

Haven't watched the video as I'm at work.

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PhilSquares
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RE: Strange JAL 747 Video Of Takeoff In Snow

Wed Feb 07, 2007 12:31 am

Quoting Aaron747 (Thread starter):
Just a case of the crew being rather late with pre-departure checklists or is this some kind of winter SOP?

Standard winter OPS. Prevents accumulation of snow and ice on the flap drive system.
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Aaron747
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RE: Strange JAL 747 Video Of Takeoff In Snow

Wed Feb 07, 2007 2:05 am

Not so strange after all. Sorry for the dumb question folks. Really appreciate the rapid nature of the information provided  Wink
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Starlionblue
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RE: Strange JAL 747 Video Of Takeoff In Snow

Wed Feb 07, 2007 3:41 am

Quoting Aaron747 (Reply 3):
Sorry for the dumb question folks.

There are no dumb questions. Only dumb posters.

I mean, eh...
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HAWK21M
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RE: Strange JAL 747 Video Of Takeoff In Snow

Thu Feb 08, 2007 12:44 am

Quoting Aaron747 (Thread starter):
I'm curious as to why the flight controls check and lowering of the flaps basically occurred in the final moments before takeoff.

Work load.....As long as it was done prior to T/O.  Smile
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BreninTW
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RE: Strange JAL 747 Video Of Takeoff In Snow

Thu Feb 08, 2007 9:33 am

Please excuse me for "way-laying" this thread a bit ... is that a 743 or a 744D? The notes on the video say both ...

How can people like me (i.e., very much amateur spotters) tell the difference between the two?
 
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Starlionblue
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RE: Strange JAL 747 Video Of Takeoff In Snow

Thu Feb 08, 2007 11:51 am

Quoting Brenintw (Reply 6):
How can people like me (i.e., very much amateur spotters) tell the difference between the two?

The wing-body fairing on the -400 is bigger, especially the front end. This one looks like a -400 but I could be wrong.
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AJ
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RE: Strange JAL 747 Video Of Takeoff In Snow

Thu Feb 08, 2007 12:08 pm

It's a Boeing 747-346 JA8177.
 
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Starlionblue
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RE: Strange JAL 747 Video Of Takeoff In Snow

Thu Feb 08, 2007 12:41 pm

Quoting AJ (Reply 8):
It's a Boeing 747-346 JA8177.

I'm glad I covered my arse by saying I could be wrong. Big grin
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Aaron747
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RE: Strange JAL 747 Video Of Takeoff In Snow

Sat Feb 10, 2007 9:03 pm

The PW engines are a dead giveaway as well. The 744 and 744Ds operated by JAL are GE.
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