As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:NATHE SMELL OF BURNING RUBBER OCCURRED ONCE AGAIN DURING THE FLIGHTPEFORMED GVI OF BOTH PACKS/ENGS/&APU FOR LEAKS. FOUND HYD LEAK FROM L/H PDU MOTOR ONTO L/E DUCT & SHIELDING;(R&R'D) PERFORMED CONTAMINATION T/S. REF FIM 21-00-01 & AMM 21-00-01-002-001. NO LONGER ANY SMELLS FROM PACKS OR ENGS IN COCKPIT. A/C OK FOR SERVICE.