What was found
AFTER SELECTING PACKS ON FOLLOWING UNPRESSURIZED TAKEOFF SMOKE IN COCKPIT AND REPORTS OF CHEMICAL BURNING SMELL IN THE CABIN. SMOKE DISSIPATED QUICKLY FROM COCKPIT. SUPP 09-037 REQUIRED. AIRCRAFT REMOVED FROM SERVICE APU ON MEL FOUND OIL IN APU ENCLOSURE REMOVED AND REPLACED L/R COALACERS SOCKS . IAW AWA SUP 14-192A OPS CHECK GOOD AT THIS TIME. INSP FOUND APU GEAR BOX CRACKED AND ENCLOSURE FILLED WITH OIL REMOVED APU ASSY REF TC SUPP 13-005 CLEANED SPILLED OIL REF W/C #5 FOR APU INSTALL REPLACED APU