United Reports July 2016 Operational Performance ..
Aug 10, 2016, 8:30 am
#16
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Aug 10, 2016, 9:44 am
#17
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That is what CO used to say about delays at EWR. Unfortunately it is their fault for bad practices for an airline on how to handle weather delays.
Aug 10, 2016, 9:46 am
#18
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There is sloppy oversight in that OT chart. The fact the 2016 observations contradict UA's actual monthly OT (A14) percentages of ~ 80% should have been clue that the rubrics had changed during the observation period. UA switched to reporting A0 at the start of 2016, which is reflected in the "disturbing" and "sustained" drop in that chart.
As much as I would love to correct the "sloppy oversight" in this chart which I freely gave my time to create from the available raw data which has no notes about the change in reporting method, I don't have some formula for normalizing the statistics pre- and post-A:00 change. If you do, please provide it.
I will correct my qualitative observations given the info that the stats changed.
Last edited by TA; Aug 10, 2016 at 9:56 am
Aug 10, 2016, 10:19 am
#19
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as mentioned earlier, this started with the 2016 reports (started in January 2016).
Will need to updated your duplicate post also.
UA noted the change as a footnote (4,5) to the data. It was noted and discussed in http://www.flyertalk.com/forum/unite...l-results.html and many of the 2016 monthly threads.
there is no fixed equation --- depends on each month.
UA's A:14 data is available from BTS or FlightStats Global Airlines Arrival Performance , You need to decide if you will show A:0 or A:14 and whether you limit it to mainline or entire fleet. A:14. Mainline is probably the most commonly reported metric (and is the historic data reported in pre-2016 UA press releases) but UA's A:0, entire fleet is probably more representative of the feel to the traveling passenger with connections (IMO).
Will need to updated your duplicate post also.
UA's A:14 data is available from BTS or FlightStats Global Airlines Arrival Performance , You need to decide if you will show A:0 or A:14 and whether you limit it to mainline or entire fleet. A:14. Mainline is probably the most commonly reported metric (and is the historic data reported in pre-2016 UA press releases) but UA's A:0, entire fleet is probably more representative of the feel to the traveling passenger with connections (IMO).
Last edited by WineCountryUA; Aug 10, 2016 at 10:25 am Reason: duplicate posting note
Aug 10, 2016, 10:29 am
#20
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The change in reporting rubric took place in January. UA has made the disclaimer every month. The exact language appears in this month's report:
July On-Time Performance4
2016 62.3%
2015 56.9%
Change 5.4 pts
4Based on consolidated scheduled flights arriving on or before scheduled arrival time
At this point, the OT chart upthread, colorful as it is, is garbage. Without doing all the homework, I would suggest sources such as flightstats and U.S. Dept of Transportation that can provide a consistent data set over the observation period.
July On-Time Performance4
2016 62.3%
2015 56.9%
Change 5.4 pts
4Based on consolidated scheduled flights arriving on or before scheduled arrival time
At this point, the OT chart upthread, colorful as it is, is garbage. Without doing all the homework, I would suggest sources such as flightstats and U.S. Dept of Transportation that can provide a consistent data set over the observation period.
Aug 10, 2016, 11:15 am
#21
Join Date: Nov 1999
Location: if it's Thursday, this must be Belgium
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Charts edited above, and statements made less conclusive.
UA noted the change as a footnote (4,5) to the data. It was noted and discussed in http://www.flyertalk.com/forum/unite...l-results.html and many of the 2016 monthly threads.
there is no fixed equation --- depends on each month.
UA's A:14 data is available from BTS or FlightStats Global Airlines Arrival Performance , You need to decide if you will show A:0 or A:14 and whether you limit it to mainline or entire fleet. A:14. Mainline is probably the most commonly reported metric (and is the historic data reported in pre-2016 UA press releases) but UA's A:0, entire fleet is probably more representative of the feel to the traveling passenger with connections (IMO).
Sorry I missed that footnote. I would love to extract that correctly normalized data, but unfortunately I don't have enough time to go through all those monthly reports by hand. If there's some queryable database, that would be helpful to know.
UA noted the change as a footnote (4,5) to the data. It was noted and discussed in http://www.flyertalk.com/forum/unite...l-results.html and many of the 2016 monthly threads.
there is no fixed equation --- depends on each month.
UA's A:14 data is available from BTS or FlightStats Global Airlines Arrival Performance , You need to decide if you will show A:0 or A:14 and whether you limit it to mainline or entire fleet. A:14. Mainline is probably the most commonly reported metric (and is the historic data reported in pre-2016 UA press releases) but UA's A:0, entire fleet is probably more representative of the feel to the traveling passenger with connections (IMO).
Last edited by WineCountryUA; Aug 10, 2016 at 5:16 pm Reason: Discuss the issues, not the posters