What was found
STL - FLT 116 - DURING TAKEOFF, AN ELECTRICAL SMELL WAS DETECTED IN THE COCKPIT. TROUBLESHOOTING REVEALED THE AURAL WARNING BOX WAS FAULTY. REMOVED AND REPLACED AURAL WARNING BOX, MFG PN H05A0035-A. OPERATIONAL CHECK NORMAL. CHECK C-1D - FEBRUARY 2, 1995 - MCI.