N48127 went tech in NCL this morning. It is now serviceable and will operate the UA159 in the morning. The A/C that arrives on UA160 (which is operating on time as far as I'm aware) will hang around until 1800 when it will depart as UA2099 with the crew and the remainder of the passengers from today's UA159.
This has now departed NCL this evening, but is heading first to Shannon, where N67134 went Tech this morning after arriving as UA25. Return to EWR (UA24 showing as cancelled) so I guess N29124 is operating NCL-SNN-EWR following its arrival into NCL this morning as UA160.
Are United's 757 fleet very unreliable?
Edit: At 19:11 N29124 is approaching Shannon with Flight No. UA26 showing (Normally, this is the flight no. for BHX-EWR)
Edit 2 : Showing as departure on Shannon's Departure board as UA2099 to EWR departure time 20:00 - Dparted at 20:20