TLV-SFO was due to leave 01:00 - they couldn't get the tannoy system to work (that's a new one for me !) and cancelled the flight....
Put up overnight and ended up leaving ~ 17:00 the following day, so a 16 hour delay.
This was (thankfully) not me but my brother, no UA status. Can he expect something from UA, or can he expect "technical issues beyond out control" ?