chieft
Posts: 326
Joined: Thu Jun 16, 2005 11:35 pm

Domestic B747-400 Flights

Fri May 05, 2006 11:00 pm

I herad, that the operators of B747-400 in Japan have locked the landing gear on some aircraft beacuse the costs for maintenace would increase dramatically if they would retract the gears on some very short domestic hops.

Are there pictures or has anybody routes? Thanks!
Aircraft are marginal costs with wings.
 
Qantas744er
Posts: 1189
Joined: Sat Jun 04, 2005 4:36 am

RE: Domestic B747-400 Flights

Sat May 06, 2006 12:32 am

Quoting ChiefT (Thread starter):
I herad, that the operators of B747-400 in Japan have locked the landing gear on some aircraft beacuse the costs for maintenace would increase dramatically if they would retract the gears on some very short domestic hops.



100% Bullshit, 2 years ago I did 4 Domestic Flights in japan with both JA and NH on their 744D planes and on none of these, the gears were not retracted, I know this because I always heard the sound,

BTW if the gear would stay out, the cost would be higher due to a lower cruise altitude and the air friction from the gear. So wo ever told you this was talking shit, and its not like the flights are only 25 minutes long...

Cheers Leo
You live and you die, by the FMA
 
MaxQ2351
Posts: 321
Joined: Sat Apr 01, 2006 6:41 am

RE: Domestic B747-400 Flights

Sat May 06, 2006 8:09 am

Quoting Qantas744ER (Reply 1):
100% Bullshit

Haha couldn't have put it better myself!! Think of it....what would be the advantages in doing that?? To save a few maintenance dollars, you limit yourself to an ultra low crusing altitude and an ultra low cruising airspeed meaning your engines are going to be very thirsty. It wouldn't be worth it in any capacity.

-Max
The 777-200LR......2 engines 4 longer haul
 
FL370
Posts: 239
Joined: Mon May 01, 2006 2:25 am

RE: Domestic B747-400 Flights

Sat May 06, 2006 1:04 pm

ya u got it all confused, u got it reveresed. the amount of friction when the gear is down is so much higher than if the gear was down.
 
andrewtang
Posts: 368
Joined: Sat Jun 23, 2001 8:51 pm

RE: Domestic B747-400 Flights

Sat May 06, 2006 1:41 pm

For the 747-400D , there is a fan on the Main Landing gears to cool the gears upon arrival due to the high number of landings within everyday. The only thing Airlines in Japan do to reduce cost is pump enough fuel just for each domestic sector so as to pay less for lighter landing weight.
 
levent
Posts: 1589
Joined: Sat Sep 04, 2004 8:11 pm

RE: Domestic B747-400 Flights

Sat May 06, 2006 6:23 pm

Quoting FL370 (Reply 3):
ya u got it all confused, u got it reveresed. the amount of friction when the gear is down is so much higher than if the gear was down

Now this is confusing...

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