As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT V1 AND BEFORE ROTATION NR 1 ENG GAVE A LOUD BANG AND APPEARED TO COMPRESSOR STALL, FOLLOWED BY A SMELL COMING FROM THE PACK A/C LEFT HAND. IN WORK AT THIS TIME TO REPLACE C1 DISK ASSY (BIRD INJESTION FOD). REMOVED AND REPLACED NR 1 ENG C1 DISK ASSY BREATHER AND VIB CK OK. BORESCOPE INSP GOOD 72-00-2610 AND 72-00-2607.