What was found
AIRCRAFT WOULD NOT PRESSURIZE AFTER TAKEOFF. RETURNED TO DEN. *S/D* MAINTENANCE SUSPECTED THE TASK VALVE. TASK VALVE REPLACED. TECHNICAL SERVICES COULD NOT IDENTIFY THE TASK VALVE REFERRED TO, NO PART NUMBER GIVEN.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WOULD NOT PRESSURIZE AFTER TAKEOFF. RETURNED TO DEN. *S/D* MAINTENANCE SUSPECTED THE TASK VALVE. TASK VALVE REPLACED. TECHNICAL SERVICES COULD NOT IDENTIFY THE TASK VALVE REFERRED TO, NO PART NUMBER GIVEN.