I had a friend of mine on last night's SAN-LHR, which was supposed to depart at 8:30pm, but he received an alert that the flight was delayed. In fact, it looks like it was out of the gate at 22.56 and off at 23.18. On ExpertFlyer, it shows Delay ZY--what does that mean exactly?
DOBA272/04NOV
* OPERATIONAL FLIGHT INFO * BA 272 -1 SA 04NOV17
CITY INFO HOUR (LOCAL)
SAN ESTIMATED TIME OF DEPARTURE 2258
LEFT THE GATE 2256
TOOK OFF 2318
DELAY ZY
ESTIMATED TIME OF ARRIVAL 1535 LHR
LHR AIRCRAFT LANDED 1540
ARRIVED 1547
*1A PLANNED FLIGHT INFO* BA 272 -1 SA 04NOV17
APT ARR DY DEP DY CLASS/MEAL EQP GRND EFT TTL
SAN 2030 SA FAJCDRIWETY/M 744 10:30
BHKMLVSNQOG/M
X/M