As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAINT ELECTRICAL BURNING SMELL COMING FROM COCKPIT / UPON FURTHER T/S PER FIM 21-21-00-810-806-AO1 FOUND LH PAC CUASING SMELL REMOVED AND REPLACED AIR CYCLE MACHINE IAW CRJ 700 AMM 21-52-08-000/400-801-A01. OPS CHECK GOOD. LEAK TEST GOOD.