What was found
PRESSURIZATION FAILURE DURING CLIMB TO 290. MAX CABIN DIFF WARNING. AFTER MX VISIT REMOVED AND REPLACED PNEUMATIC RELAY AND TEFLON VACUUM FITTINGS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PRESSURIZATION FAILURE DURING CLIMB TO 290. MAX CABIN DIFF WARNING. AFTER MX VISIT REMOVED AND REPLACED PNEUMATIC RELAY AND TEFLON VACUUM FITTINGS.