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Domestic B747-400 Flights  
User currently offlineChiefT From Germany, joined Jun 2005, 357 posts, RR: 0
Posted (8 years 5 months 22 hours ago) and read 2784 times:

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.
5 replies: All unread, jump to last
 
User currently offlineQantas744ER From United States of America, joined Jun 2005, 1286 posts, RR: 4
Reply 1, posted (8 years 5 months 20 hours ago) and read 2705 times:

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



Happiness is V1 in Lagos
User currently offlineMaxQ2351 From , joined Dec 1969, posts, RR:
Reply 2, posted (8 years 5 months 12 hours ago) and read 2532 times:

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


User currently offlineFL370 From United States of America, joined Apr 2006, 252 posts, RR: 0
Reply 3, posted (8 years 5 months 7 hours ago) and read 2422 times:

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.

User currently offlineAndrewtang From United Kingdom, joined Jun 2001, 461 posts, RR: 10
Reply 4, posted (8 years 5 months 7 hours ago) and read 2395 times:

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.

User currently offlineLevent From France, joined Sep 2004, 1718 posts, RR: 5
Reply 5, posted (8 years 5 months 2 hours ago) and read 2302 times:

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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