As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED A LEFT ENGINE HPSOV MESSAGE AND BLEED LIGHT ILLUMINATED DURING TAKEOFF ROLL, REGAINED PRESSURE WITH THRUST LEVER RETARDED. ICING CONDITIONS PRESENT ENTIRE TIME. DUCT PRESSURE 33 PSI. THE AIRCRAFT WAS GROUNDED. MAINTENANCE FOUND THE HPSOV DEFECTIVE AND STUCK IN THE OPEN POSITION. REMOVED AND REPLACED LEFT ENGINE HPSOV IAW AMM 36-11-07. ACCOMPLISHED OPERATIONAL TEST OF BLEED AIR SYSTEM IAW AMM 36-11-00 AND ENGINE GROUND TEST IAW AMM 71-00-00-715-066. OPS CHECKED GOOD.