As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GNDED. SHORTLY AFTER TAKEOFF A FAINT HOT OIL ODOR WAS REPORTED. NO VISIBLE SMOKE. ACCOMPLISHED MCM CARD 21-96-01 & FOUND LT & RT AIR CONDITIONING PRESS REGULATOR VLV BAD. R & R LT VLV IAW AMM 21-31-01. OPERATIONAL & LEAK CHECKED GOOD. SEE AALA20160216012 FOR RT VLV.