What was found
ACFT FAILED TO PRESSURIZE IN BOTH AUTO & MANUAL MODE. FOUND GROUND CONNECTION VALVE COVER MISSING, REPLACED COVER IAW AMM 21-22-04, PERFORMED PRESSURIZATION CHECK IAW AMM 21-31-00, OPS CHECKED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ACFT FAILED TO PRESSURIZE IN BOTH AUTO & MANUAL MODE. FOUND GROUND CONNECTION VALVE COVER MISSING, REPLACED COVER IAW AMM 21-22-04, PERFORMED PRESSURIZATION CHECK IAW AMM 21-31-00, OPS CHECKED GOOD.