Peter Max 777
Mar 3, 2005 | 9:47 pm
#16
Join Date: Dec 2004
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Originally Posted by rkkwan
CO's 777 flights vary a lot in lengths. Some European roundtrips can be done in about 16-18 hours, like EWR-LHR; while flights to NRT will take about 27 hours to turn around. Rotating the planes is the only sensible way to schedule these flights to make the most of them.
And then there's the EWR-HKG flight. A 777 is left in HKG for about 16 hours on the ground after each flight. CO has a contract with HAECO, the local maintenance firm, to service the 777 there.
And then there's the EWR-HKG flight. A 777 is left in HKG for about 16 hours on the ground after each flight. CO has a contract with HAECO, the local maintenance firm, to service the 777 there.
Mar 3, 2005 | 9:58 pm
#17
Join Date: Aug 2004
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Posts: 9,816
Originally Posted by nycden
Ahhh, thank you. That makes perfect sense.
Mar 3, 2005 | 11:03 pm
#18
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Well, I have a little too much time on hand tonite, so I studied the CO timetable a little on what CO's 18 777 will be doing from Apr 02/03. This doesn't take into account the new PEK authority.
I will use a particular time, midnight EST or CST, and see where the planes are. [I know that HKG is only flown 6 times a week, and one of the TLV flights 5 times, but I'm ignoring those missing frequencies to make it simpler.]
2 enroute IAH->LGW
1 enroute each IAH->NRT & CDG
2 enroute EWR->TLV
1 enroute each EWR->AMS, FRA, HKG, LGW, MAD, CDG, NRT
1 enroute TLV->EWR
1 on ground, or about to depart HKG->EWR
2 overnighting in IAH
That accounts for 17 of the 18 birds. I assume one of them may be in heavy maintanence at any time point, or overnighting in EWR.
Of those 17 in rotation, there are really little downtime. One stays on the ground in HKG for ~16 hours, one in TLV for about 7 hours, and two at IAH for about 18 hours each. That's all.
I will use a particular time, midnight EST or CST, and see where the planes are. [I know that HKG is only flown 6 times a week, and one of the TLV flights 5 times, but I'm ignoring those missing frequencies to make it simpler.]
2 enroute IAH->LGW
1 enroute each IAH->NRT & CDG
2 enroute EWR->TLV
1 enroute each EWR->AMS, FRA, HKG, LGW, MAD, CDG, NRT
1 enroute TLV->EWR
1 on ground, or about to depart HKG->EWR
2 overnighting in IAH
That accounts for 17 of the 18 birds. I assume one of them may be in heavy maintanence at any time point, or overnighting in EWR.
Of those 17 in rotation, there are really little downtime. One stays on the ground in HKG for ~16 hours, one in TLV for about 7 hours, and two at IAH for about 18 hours each. That's all.
Mar 3, 2005 | 11:15 pm
#19
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And just take one 777, for example, to try to see where it'll fly. [I'm assuming there are only 17 777s, as I don't know what the last one may be doing.]
Let's start at 11:55p local time in Tel Aviv. CO 91
TLV 11:55p - EWR 4:45a
Early in the morning, this is the only 777 at EWR. It will definitely go on CO 9:
EWR 11:10a - NRT 1:50p
Since this bird arrives NRT before the one from IAH, it should take the first departure, which is CO 6:
NRT 3:40p - IAH 1:45p
From Houston, it may go to LGW or CDG later that afternoon, and so on. But assume that it arrives on schedule as the 1st bird to come back to IAH that day, then it'll may do CO 34:
IAH 3:50p - LGW 6:55a
Being the second LGW arrival that morning, it should do CO 19:
LGW 10:30a - EWR 1:25p
Being the 3rd plane to arrive back from Europe (not including CO 91 from TLV), it might take the 3rd departure after NRT, which is the shorthaul to Houston, CO 51:
EWR 4:20p - IAH 7:30p
And so on... Anyways, many assumptions are made here. Just an example of what a particular plane may do over a few days' time.
Let's start at 11:55p local time in Tel Aviv. CO 91
TLV 11:55p - EWR 4:45a
Early in the morning, this is the only 777 at EWR. It will definitely go on CO 9:
EWR 11:10a - NRT 1:50p
Since this bird arrives NRT before the one from IAH, it should take the first departure, which is CO 6:
NRT 3:40p - IAH 1:45p
From Houston, it may go to LGW or CDG later that afternoon, and so on. But assume that it arrives on schedule as the 1st bird to come back to IAH that day, then it'll may do CO 34:
IAH 3:50p - LGW 6:55a
Being the second LGW arrival that morning, it should do CO 19:
LGW 10:30a - EWR 1:25p
Being the 3rd plane to arrive back from Europe (not including CO 91 from TLV), it might take the 3rd departure after NRT, which is the shorthaul to Houston, CO 51:
EWR 4:20p - IAH 7:30p
And so on... Anyways, many assumptions are made here. Just an example of what a particular plane may do over a few days' time.
Last edited by rkkwan; Mar 3, 2005 at 11:27 pm