What was found
LOST CABIN AT APPROX 18 - 210 FL, THE MAN PRESS VLV SHOWED OPEN & TRIED MANUAL CONTROL & IT DID NOT FIX PROBLEMS. NEITHER PRESSURIZATION SYS FAULTED. TROUBLESHOOTING ON THE PRESSURIZATION SYS IN PROGRESS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LOST CABIN AT APPROX 18 - 210 FL, THE MAN PRESS VLV SHOWED OPEN & TRIED MANUAL CONTROL & IT DID NOT FIX PROBLEMS. NEITHER PRESSURIZATION SYS FAULTED. TROUBLESHOOTING ON THE PRESSURIZATION SYS IN PROGRESS.