Delta Virtual Airlines Water Cooler | Airline Operations |
Flight Length outside Schedule Guidelines - Huh? |
DVA7504
Captain, B757-200
Joined on July 04 2009
Naperville, IL USA
32 legs, 88.7 hours
1 legs,
1.7 hours online 30 legs,
85.3 hours ACARS
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Posted onPost created on
August 31 2009 21:36 ET by Robert Clements
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This afternoon I flew from from Fort Lauderdale, FL to Kingston, Jamaica on Air Jamaica Flight #32. In the flight report, one line in "other information" says "Flight Length outside Schedule Guidelines". What does this mean?
Bob
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DVA7180
Captain, MD-88
Joined on March 17 2009
Richmond, BC Canada
59 legs, 109.5 hours
4 legs,
6.8 hours online 56 legs,
101.4 hours ACARS 2 legs,
3.2 hours event
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Posted onPost created on
August 31 2009 22:59 ET by Lindsey Wiebe
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I've often wondered that myself. I'm thinking there is like a max of 150% of schedule length for that flight or something like that.
Lindsey WiebeCaptain, MD-88
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DVA2724
Senior Captain, L-1011-100
Joined on December 04 2005
Million Mile Club
Seven Century Club
"Long Live the TRISTAR!!" Concord, GA USA
714 legs, 3,467.6 hours
43 legs,
80.2 hours online 466 legs,
2,709.6 hours ACARS 5 legs dispatched, 26.7
hours
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Posted onPost created on
September 01 2009 09:59 ET by Ken Nesbitt
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The website take averages on flight times. I can't remember what the percentage is but if you fly longer than that percentage then it will flag it. CHEERS
Ken NesbittSenior Captain, L-1011-100
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DVA3382
Senior Captain, B717-200
OLP, COMM
Joined on July 26 2006
Event Half Century Club
50 State Club
Globetrotter
DVA Fifteen-Year Anniversary
Kangaroo Club
Three Million Mile Club
Tri-Millennium Club
Online Seven Century Club
Everett 1500 Club
White Knuckles Club
"Go For Launch" Houston, TX
3,295 legs, 8,680.6 hours
712 legs,
1,197.7 hours online 3,233 legs,
8,521.4 hours ACARS 61 legs,
145.0 hours event 0 legs dispatched, 6.1
hours
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Posted onPost created on
September 01 2009 10:11 ET by Ryan Daugherty
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If you're under it, a few of my short ones have been flagged too.
RD
Ryan DaughertySenior Captain, B717-200
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DVA057
Senior Captain, B777-200
COMM
Joined on June 02 2002
Events Century Club
Six Century Club
Online Quintuple Century Club
Everett 500 Club
50 State Club
DVA Twenty-Year Anniversary
"We Are ... Penn State!" Atlanta, GA USA
672 legs, 1,338.4 hours
531 legs,
1,076.4 hours online 392 legs,
786.1 hours ACARS 190 legs,
406.3 hours event
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Posted onPost created on
September 01 2009 10:16 ET by Terry Eshenour
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We have a time zone gremlin that pops up its nasty head on occasion. Time Zones are under continuous change particularly as it relates to Daylight Savings Time and some times for political reasons. The result is system time calculations off by 1 hour.
In Robert's case, the system calculated the avg. time to be 0.6 hrs for a 524 nm subsonic flight. I will have a look at the Time Zone for Kingston.
"Trip 524 Nautical Miles
Logged Time 2.3 hours (average time: 0.6 hours)"
Should you find other obvious time calc. errors, please create a Help Desk Issue with a link to the flight report in question.
EDIT: The Time Zones are correct. Same UTC offset GMT -5. Kingston does not observe DST; Fort Lauderdale does. Creating an Issue Tracker.
Terry EshenourSenior Captain, B777-200
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DVA3809
First Officer, B767-300
OLP
Joined on December 12 2006
Online Century Club
Triple Century Club
East Petersburg, PA USA
329 legs, 829.1 hours
124 legs,
239.2 hours online 291 legs,
767.0 hours ACARS 25 legs,
52.9 hours event
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Posted onPost created on
September 01 2009 12:23 ET by Garen Evans
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I too have received this flag (i.e., "Flight Length outside Schedule Guidelines"), and never really understood it. So from what it sounds like to me the system calculates the flight time based on the actual departure and arrival times? And as a result of DST it might get fouled up somehow? Wouldn't it be easier to simply calculate the estimated time enroute (ETE) based on the flight data? For example, my own personal observations suggests that the length of the flight can be estimated as a function of great circle distance. So for example, in Robert's case, and using my data I estimate 108.6 minutes, or 1.81 hours block time. Pretty close to Robert's logged time from KFLL to MKJP, though it would certainly have been considered a late flight since it exceeded ETE+15 minutes (or 2.05 hours). I'd be glad to share my methodology/formulas if it's any help.
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DVA043
Senior Captain, MD-11
OLP
Joined on June 10 2001
Event Half Century Club
Online Double Century Club
50 State Club
DVA Twenty-Year Anniversary
Everett 1500 Club
Bi-Millennium Club
Four Million Mile Club
"Col. Panic" Marietta, GA
2,241 legs, 8,967.3 hours
240 legs,
553.9 hours online 1,899 legs,
7,760.4 hours ACARS 75 legs,
196.3 hours event 2,277 legs, 9,102.2 hours total 91 legs dispatched, 66.4
hours
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Posted onPost created on
September 01 2009 13:09 ET by Luke Kolin
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There is an issue with how the system handles airports that do not observe DST year-round. That's the problem here.
Cheers!
Luke KolinSenior Captain, MD-11
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DVA7504
Captain, B757-200
Joined on July 04 2009
Naperville, IL USA
32 legs, 88.7 hours
1 legs,
1.7 hours online 30 legs,
85.3 hours ACARS
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Posted onPost created on
September 01 2009 18:48 ET by Robert Clements
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Terry, thanks for the e-mail. I work with timezones for a living. So, I appreciate the headaches!
Bob
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DVA057
Senior Captain, B777-200
COMM
Joined on June 02 2002
Events Century Club
Six Century Club
Online Quintuple Century Club
Everett 500 Club
50 State Club
DVA Twenty-Year Anniversary
"We Are ... Penn State!" Atlanta, GA USA
672 legs, 1,338.4 hours
531 legs,
1,076.4 hours online 392 legs,
786.1 hours ACARS 190 legs,
406.3 hours event
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Posted onPost created on
September 01 2009 19:06 ET by Terry Eshenour
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Then you can appreciate the number of time zone definitiions we have to cope with in our system. It isn't a matter of just having 24.
Me too, I worked and lived across the International Date Line with a 12 - 14 hr time difference between home office and the field. The fractional time zones are the ones that put my mind in a knot.
Terry EshenourSenior Captain, B777-200
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DVA043
Senior Captain, MD-11
OLP
Joined on June 10 2001
Event Half Century Club
Online Double Century Club
50 State Club
DVA Twenty-Year Anniversary
Everett 1500 Club
Bi-Millennium Club
Four Million Mile Club
"Col. Panic" Marietta, GA
2,241 legs, 8,967.3 hours
240 legs,
553.9 hours online 1,899 legs,
7,760.4 hours ACARS 75 legs,
196.3 hours event 2,277 legs, 9,102.2 hours total 91 legs dispatched, 66.4
hours
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Posted onPost created on
September 01 2009 20:27 ET by Luke Kolin
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We're in good shape for this one. I'm going to try and do an upgrade later this evening, which should resolve the schedule issues, load the latest Innovata data set and get us to the 0909 AIRAC files.
Cheers!
Luke KolinSenior Captain, MD-11
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