EF comments are showing MX as the cause
Comments:
SCHEDULE ACTUAL DELAY/CANCEL ARRIVAL
CITY ARRV DEPT ARRV DEPT CODES GATE
SEA ORIG 905A 916A
BOI F 1150A 1225P 1201P CXLD MX HG
DAL 303P TERM CXLD MX
MX - MECHANICAL - CANCELLATION
3SEA/ETD0909A 0.04L LATE ARRIVAL *1025
4SEA/OUT0916A 0.11L OFF0926A *1128
2DAL/ETA0505P 2.02L PROJECTED *1326
1DAL/LX XCLD MECHANICAL - CANCELLATION *1414
2BOI/ON 1152A IN 1201P 0.11L *1302
3BOI/ETD0130P 1.05L DUE MECHANICAL *1325