As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER AIR START BLEED AIR INSUFFICIENT TO OPERATE PACKS ONORDER TO COOL AIRCRAFT. GROUNDED - YES. STARTED BOTH ENGINES AND MONITORED AIR SUPPLY &COOLING TEMPTO AND FROM PACKS AIR FLOW SUFFICIENT IAW AMM 71-00-00-700-800-G00 COOOLING TEMP SUFFIENT IAW AMM 21-51-11-400-801.