What was found
UNABLE TO PRESSURIZE AIRCRAFT AFTER TAKE OFF. R&R GROUND CONNECTION VALVE PERFORMED OPS CHECK OF PRESSURIZATION, OPS CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
UNABLE TO PRESSURIZE AIRCRAFT AFTER TAKE OFF. R&R GROUND CONNECTION VALVE PERFORMED OPS CHECK OF PRESSURIZATION, OPS CHECK GOOD.