What was found
CLIMBING AC UNABLE TO MAINTAIN CABIN PRESSURE AT 29,000, RETURNED TO MKE. MTC REMOVED AND REPLACED NEG PRESSURE RELIEF SEAL AND LEFT PACK SWITCH, CORRECTED R2-125 AND R2-154 LOOSE TERMINAL WASHERS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
CLIMBING AC UNABLE TO MAINTAIN CABIN PRESSURE AT 29,000, RETURNED TO MKE. MTC REMOVED AND REPLACED NEG PRESSURE RELIEF SEAL AND LEFT PACK SWITCH, CORRECTED R2-125 AND R2-154 LOOSE TERMINAL WASHERS.