As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE/VAPOR IN COCKPIT, SMELLS OF BURNT SKYDROL, DISSIPATED AFTER 10 TO 12 MINUTES. CREW DONNED OXYGEN MASKS AND RETURNED LANDING OVERWEIGHT WITH LOW SINK RATE. FOUND HYDRAULIC LEAK AND CRACKED HYDRAULIC RETURN LINE NR 2 PACK AREA. SUSPECT INGESTION INTO AIR CONDITIONING SYSTEM. REPAIRED WITH TEMPORARY LINE IAW MM 20-11-05, OVERWEIGHT INSPECTION COMPLIED WITH.