As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BURNING SMELL AFTER TAKE OFF WITH NO AIRFLOW TO FLIGHT DECK SMELL WENT AWAY 180 ALSO AIR FLOW RESTRED ALSO AROUND THAT ALT. / FOUND ONE FLIGHT DECK AIR DISTRUBTION DUET COUPLING OFF AND ONE DUCT WITH 3' HOLE. REINSTALLED DUCT COUPLING AND RR'D 90 DEGREE DUCT ELBOW THAT WAS DAMAGED (PN 214A1147-7) IAW AMM 21-20-02. NO FURTHER DEFECTS FOUND AT THIS TIME