As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISCREPANCY: LEFT DUCT PRESSURE FLUCTUATES ON CLIMB OUT. CORRECTIVE ACTION: PERFORMED FIM 36-20 FT 803, SYSTEM CHECK OK. PERFORMED AMM 36-10 FT 831, REPLACED FAN AIR TEMP SENSOR PER AMM 36-16-17, BOTH LEAK CHECK AND BITE TEST OK. GROUND VERIFICATION CHECK OK.