Originally Posted by
NeoOfTheCRS
Does the DOT collect data on mechanical delays/cancellations?
Yes, the DOT tracks reason for delay. The reasons included are:
- Carrier Delay
- Weather Delay
- NAS Delay
- Security Delay
- Late Aircraft Delay
All mx should be in Carrier Delay but all carrier delay won't be mx necessarily.
I just pulled the data for January 2017 from DOT. UA had ~42k total flights ad ~8000 flights with a delay. Half of those had "carrier delay" as responsible for part (airlines can assign multiple reasons) of the total delay time. Of ~350 cxl there were ~100 blamed on Carrier reasons.
For AA 73k total flights with 14k delays and 7200 w/ carrier as partly at fault. The AA CXLs were ~300/1185 as Carrier.