What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
After shutdown while still seat belted in aircraft, line guy noticed smoke coming from engine compartment. After exiting the aircraft pilot noticed smoke starting to build and change to a darker color smoke. Pilot looked up through louvered vents under engine compartment and saw electrical sparking/arcing inside the compartment. Pilot ran back to cockpit to verify all electrical switches were off. Verified switchs were off but noticed that the pfd/mfd were still on and avionics fan was running. Two crash trucks arrived an extinguished the fire.
It was found that the alternator was not wired correctly during installation which started the fire and the extent of the damage.
The alternator did not malfunction, had it been wired correctly there would have been no fire.
As the FAA filed it
AFTER SHUTDOWN WHILE STILL SEAT BELTED IN AIRCRAFT, LINE GUY NOTICED SMOKE COMING FROM ENGINE COMPARTMENT. AFTER EXITING THE AIRCRAFT PILOT NOTICED SMOKE STARTING TO BUILD AND CHANGE TO A DARKER COLOR SMOKE. PILOT LOOKED UP THROUGH LOUVERED VENTS UNDER ENGINE COMPARTMENT AND SAW ELECTRICAL SPARKING/ARCING INSIDE THE COMPARTMENT. PILOT RAN BACK TO COCKPIT TO VERIFY ALL ELECTRICAL SWITCHES WERE OFF. VERIFIED SWITCHS WERE OFF BUT NOTICED THAT THE PFD/MFD WERE STILL ON AND AVIONICS FAN WAS RUNNING. TWO CRASH TRUCKS ARRIVED AN EXTINGUISHED THE FIRE.
IT WAS FOUND THAT THE ALTERNATOR WAS NOT WIRED CORRECTLY DURING INSTALLATION WHICH STARTED THE FIRE AND THE EXTENT OF THE DAMAGE.
THE ALTERNATOR DID NOT MALFUNCTION, HAD IT BEEN WIRED CORRECTLY THERE WOULD HAVE BEEN NO FIRE.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.