As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START, RT PACK TEMP WENT TO 100 C FOLLOWED BY PACK LIGHT THAT WOULD NOT RESET. GROUNDED - YES. FOUND THE RT ACM LOCKED UP BLADE MISSING. REMOVED AND REPLACED RT PACK ACM PER AMM 21-51-04/401. LK CK GOOD, RT PACK OPS GOOD REF AMM 21-51-04.