Here are the notes on that flight. I think this easily qualifies for EC261 compensation.
7LHR/AUTO REACCOM DLY FLT COMPLETED SEE N*P1AA0099LHR17SEP *0221*CRCYMG
4LHR/OUT0947 *0347
3LHR/DCSN1045 ACF-DELAYS DURING A/C FUELING *0444
1LHR/ CANCEL LHR -LHR -JFK -CRX *0448
2ORD/PRE1436 *0304
1ORD/LX CANCEL JFK -ORD -CRX-CXLD DUE TO CREW AVAILABILITY*0451
3JFK/ETD1315 LAE-PREVIOUS DELAY OF THIS AIRCRAFT *0304