As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 3532 - STL - NR 1 PACK CAUSING BURNING SMELL WITH SMOKE IN THE COCKPIT. MAINTENANCE INSPECTED THE NR 1 PACK SYSTEM AND FOUND THE WATER SEPARATOR HOSE LOOSE AND LEAKING. RE-SECURED HOSE, PERFORMED OPS CHECK OF THE BLEED SYSTEM WITH FURTHER DEFECTS NOTED.