As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT AND RIGHT PACK FAULT STATUS. FOUND LEFT PACK ACM SEIZED, REMOVED AND REPLACED ACM IAW CRJ 550 AMM 21-51-08. SEE LOG PG 498927 ITEM 2 FOR OPS CHECK. LH AND RH PACKS OPS CHECK GOOD IAW CRJ 550 AMM 21-51-00 P/NON/OFF GG670-95009-7 S/N ON 02193 S/N OFF 02184