As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR PRESSURE IN FLIGHT DECK SURGES ON PACK 1 WITH APU BLEED AIR SELECTED. ALSO A OIL BURNING SMELL IS NOTED WITH PACK OPERATION. FACT 31DEC24 01:48 CLT REMOVED AND REPLACED AIR DISTRIBUTION VALVE IAW EMB 145 AMM21-22-01. OPS CHECK AND LEAK CHECK GOOD. ACFT OK FOR SERVICE