As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, THE #1 BLEED VALVE FLAG WOULD NOT GO OFF. THE #2 BLEED VALVE FLAG CYCLED AS NORMAL. AVIONICS DID A RESET OF THE SYSTEM, BUT NO CHANGE. REMOVED AND CLEANED #1 ENG BLEED VALVE FILTER IAW ARRIEL MM TASK 75-31-00-210-802-A01. A SUBSEQUENT TEST FLIGHT EVALUATION REVEALED #1 ENGINE BLEED VALVE FAILS TO CLOSE DURING BLEED VALVE CHECK. REMOVED AND REPLACED BLEED VALVE IAW ARRIEL 1 E2 75-31-00-900-804-A01.