As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF AND CLIMB THE CREW REPORTED AN ACRID/OIL SMELL IN CABIN AND COCKPIT AND SMOKE IN THE COCKPIT. NO OVERHEAT INDICATIONS INDICATED FOR ENGINES OR PACKS. SMOKE CLEARED PRIOR TO LANDING. MAINTENANCE FOUND LEAKING LINE ON LEFT T/R CONTROL VALVE. MAINTENANCE REMOVED, INSPECTED AND REINSTALLED THE LINE, LEAK CHECKS GOOD. PERFORMED PNEUMATIC SYSTEM DUCT BURNOUT PER OPN 5090.