Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
How Are Aircraft Scheduled?  
User currently offlineSE210Caravelle From United States of America, joined Dec 2004, 258 posts, RR: 1
Posted (1 year 6 months 1 week 6 days 10 hours ago) and read 2313 times:

I've found bits and pieces on this around the web and on A.net, but I was wondering if someone could provide an explanation as to how aircraft are scheduled?

In today's day and age, is the process done via computer or does someone go through each flight by hand to figure out what aircraft needs to be where and when? With a route network as vast as UA's or DL's, this seems an impossibly complex task. Is aircraft scheduling generally done monthly, seasonly or on the fly? Is it one person's job or are many people involved in the process?

Any info would be helpful!

5 replies: All unread, jump to last
 
User currently offlineapodino From United States of America, joined Apr 2005, 4234 posts, RR: 6
Reply 1, posted (1 year 6 months 1 week 6 days 9 hours ago) and read 2290 times:

At my carrier...which is a regional...we start the process three days out. A computer will automatically build the airplane schedule with assigned flights for the third day after the current day. MX planning at the same time will be looking at MX requirements for the fleet and will create work packages and assign them to various MX bases depending on the needs of the airplane and the capability of the MX base. A dispatch coordinator will come in and adjust the computer routings for the third day to ensure that each airplane gets into its MX base when its scheduled to.

In a real time environment...you deal with things like unscheduled mx, weather, MEL limits, etc...and the dispatch coordinators will reassign and reroute airplanes to ensure the smooth running of the operation. It is always a dynamic process, and getting an AC change one hour before departure is not uncommon.


User currently offlinetdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 2, posted (1 year 6 months 1 week 6 days 8 hours ago) and read 2268 times:

Quoting SE210Caravelle (Thread starter):
In today's day and age, is the process done via computer or does someone go through each flight by hand to figure out what aircraft needs to be where and when?

For anything more than a trivially small airline, it's done by computer. It's a fairly well defined optimization problem, academics and industry have been on it for a while.

Quoting SE210Caravelle (Thread starter):
Is aircraft scheduling generally done monthly, seasonly or on the fly? Is it one person's job or are many people involved in the process?

A few days ahead is normal for the planned schedule. The abnormal operations group will handle things that happen more tactically.

Tom.


User currently offlineSE210Caravelle From United States of America, joined Dec 2004, 258 posts, RR: 1
Reply 3, posted (1 year 6 months 1 week 6 days 7 hours ago) and read 2242 times:

Thank you! Aircraft scheduling has always befuddled me and those replies were very informative.

Another Q you might be able to help me out with:

When airlines are designing their schedules do they attempt to minimize ahead of time the # of a/c flying a given route or do they just leave it to the computer to do that after the fact? Or a little of both? For example, let's say UA flies ORD-DCA-ORD 10 times a day. Will they 1) design that schedule with the hope of having the same reg make as many of those segments as possible or will they 2) just have the computer figure out AC scheduling and design the schedule with the most convenient times for passengers?

I'd imagine the answer to this question also depends on how long the route is.


User currently offlineFabo From Slovakia, joined Aug 2005, 1219 posts, RR: 1
Reply 4, posted (1 year 6 months 1 week 6 days 3 hours ago) and read 2168 times:

I would say little of both, because:

Quoting SE210Caravelle (Reply 3):
1) design that schedule with the hope of having the same reg make as many of those segments as possible

this is not advisable as it would make for uneven cycle/time distribution among the fleet (although it can work with cycling aircraft between assignments)

and this

Quoting SE210Caravelle (Reply 3):
2) just have the computer figure out AC scheduling and design the schedule with the most convenient times for passengers?

could lead to inefficient fleet utilisation.



The light at the end of tunnel turn out to be a lighted sing saying NO EXIT
User currently offlinetdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 5, posted (1 year 6 months 1 week 5 days 15 hours ago) and read 2041 times:

Quoting SE210Caravelle (Reply 3):
For example, let's say UA flies ORD-DCA-ORD 10 times a day. Will they 1) design that schedule with the hope of having the same reg make as many of those segments as possible or will they 2) just have the computer figure out AC scheduling and design the schedule with the most convenient times for passengers?

There's no real advantage (and some disadvantages) to 1). However, scheduling is rarely totally computer driven because there are a ton of non-analytic considerations. It's a lot simpler to define the schedule, have the computer map the aircraft into the schedule, then tweak as necessary to improve utilization. Because one aircraft typically circulates throughout the network, it's not normal to map the scheduling to the utilization of any one aircraft but to the network as a whole.

Tom.


Top Of Page
Forum Index

Reply To This Topic How Are Aircraft Scheduled?
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
How Are Aircraft Cabins Cooled And Heated? posted Thu Nov 25 2004 09:43:52 by Mozart
How Long Are Aircraft Stored In The Desert? posted Wed Nov 19 2008 18:13:38 by Sovietjet
How Are RR Trents Shipped To Boeing? posted Fri Jul 20 2012 11:32:03 by seachaz
How Are Interior Fittings Done? posted Fri Jul 20 2012 10:51:51 by contrails67
How Are Boarding Times Determined? posted Mon Apr 9 2012 18:13:32 by AlnessW
How Are B747-200 And -300 Different, Besides SUD? posted Wed Feb 22 2012 16:34:33 by Newark727
How Are Head/Tailwinds Calculated? posted Thu Feb 9 2012 19:53:07 by UAL747
How Are Avod Systems And FMC Updated? posted Sun Aug 21 2011 12:28:34 by initious
For A Novice, How Are Composite Materials Made? posted Sun Aug 7 2011 19:42:43 by VC10er
How Are Cargo 747s Upper Deck Arranged? posted Wed Apr 20 2011 12:14:51 by c5load

Sponsor Message:
Printer friendly format