As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLT 612 - IMMEDIATELY AFTER TAKEOFF NOTICED ELECTRICAL SMELL IN COCKPIT. SMELL WENT AWAY IN A FEW MINUTES. DURING CLIMB-OUT NOTICED LEFT IGNITION C/B TRIPPED. RESET C/B PER QRH, WOULD NOT RESET. GOT A BEEP NOISE AND SPARKS CAME OUT OF OVERHEAD PANEL NEAR IGNITION SWITCH. REPLACED IGNITION SWITCH. OPS CHECK NORMAL. (M)