What was found
RECEIVED A MASTER WARNING "DIFF PRESSURE" MESSAGE ON CLIMB-OUT, FLIGHT NR 6621. REMOVED AND REPLACED CABIN PRESSURE ACQUISITION MODULE IAW AMM 21-33-01. OPERATIONAL TEST GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
RECEIVED A MASTER WARNING "DIFF PRESSURE" MESSAGE ON CLIMB-OUT, FLIGHT NR 6621. REMOVED AND REPLACED CABIN PRESSURE ACQUISITION MODULE IAW AMM 21-33-01. OPERATIONAL TEST GOOD.