UA228 IAD-DUB 764 cancelled due to maintenance after a 2 hr 34 min delay. Return UA229 DUB-IAD on 9/28 cancelled as a result.
UA507 SFO-FCO 772 returned to SFO due to maintenance after 2 hrs 55 mins in the air. Flight took off again 7 hrs 52 mins late. Return UA506 FCO-SFO on 9/28 cancelled as a result.
UA960 EWR-FRA 789 (usually 78X) cancelled due to maintenance. Replacement flight UA3037 was scheduled the same time as UA960. Return UA961 FRA-EWR on 9/28 cancelled as a result. Replacement flight UA3038 was scheduled the same time as UA961.