MSYYZ
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Posts: 665
Joined: Sat Oct 22, 2005 11:16 pm

How Long Between Long Haul Flights..

Wed Mar 29, 2006 1:30 am

I am just wondering , is there a recommendation from Airline Manufacturers regarding how long should a long-hauler stay on the ground between 2 long haul flights ? Or it depends on the Airline's operation policy ?
Another question , is it a normal procedure for Airlines to use a long-hauler on a short-haul high density route between 2 long-haul flights ?
Any answer is much appreciated .
A346,A343,A342,A332,A333,A310,A300,AB6,A319,A320,A321,B741,B744,B777,B767,B732,B735,B727,B707,B757,MD80,F-70,E-170,B738
 
747luvr
Posts: 331
Joined: Thu Jul 21, 2005 1:39 am

RE: How Long Between Long Haul Flights..

Wed Mar 29, 2006 1:40 am

In order to give the a/c a 'rest'?
 
jush
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Joined: Sat Apr 09, 2005 2:10 am

RE: How Long Between Long Haul Flights..

Wed Mar 29, 2006 2:05 am

Quoting 747LUVR (Reply 1):
In order to give the a/c a 'rest'?

He might mean something like engine cool down or so. Can't imagine anything else.
Can't give you any answer though only that engines are cooling down in descent already cause they're quite a long time almost idle.

Regards
jush
There is one problem with airbus. Though their products are engineering marvels they lack passion, completely.
 
MSYYZ
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RE: How Long Between Long Haul Flights..

Wed Mar 29, 2006 2:19 am

Quoting 747LUVR (Reply 1):
In order to give the a/c a 'rest'?

That's exactly what i mean .
A346,A343,A342,A332,A333,A310,A300,AB6,A319,A320,A321,B741,B744,B777,B767,B732,B735,B727,B707,B757,MD80,F-70,E-170,B738
 
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Starlionblue
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RE: How Long Between Long Haul Flights..

Wed Mar 29, 2006 2:31 am

Quoting MSYYZ (Reply 3):
Quoting 747LUVR (Reply 1):
In order to give the a/c a 'rest'?

That's exactly what i mean .

There's really no need for a rest. That is, the requirements for fueling, catering, unloading and loading of cargo and pax will in almost all cases exceed any need for a rest. The only thing I can think of is brake cooling time, but with new carbon discs it's not a problem unless maybe you just rejected a take-off.

The other reason for a "rest" is maintenance.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
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LTU932
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RE: How Long Between Long Haul Flights..

Wed Mar 29, 2006 6:50 pm

Quoting Starlionblue (Reply 4):
The only thing I can think of is brake cooling time, but with new carbon discs it's not a problem unless maybe you just rejected a take-off.

I recall the A343 needs lots of brake cooling time, since those brakes are used up much more than the others due to the insufficient reverse thrust those CFM56 produce. Please correct me if I'm wrong on that.
 
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zeke
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RE: How Long Between Long Haul Flights..

Wed Mar 29, 2006 7:21 pm

Quoting LTU932 (Reply 5):
I recall the A343 needs lots of brake cooling time, since those brakes are used up much more than the others due to the insufficient reverse thrust those CFM56 produce. Please correct me if I'm wrong on that.

We have recorded the brake cool down times in our manuals. Can have brake temps at 500 deg 60 minutes before pushback and still will be cool enough for takeoff, they dont get anywhere near this. Outside air temperature was found to have little effect on cool down times, wind speed does.
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