What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Pilot was on flight to Salt Lake City at night. Pilot was instructed to switch to tower frequency, pilot complied and was not able to make contact with tower. At that time pilot noted a discharge indication on the ammeter, pilot turned off all unnecessary electronics, attempted to switch to emergency code on transponder but inadvertently selected 7500. Pilot only had small key chain flash light in cockpit. Cockpit lights began to dim and went out. Pilot was looking for bountiful skypark airport and realized he wouldn't be able to turn on runway lights because of electrical failure so he headed for runway 17 at Salt lake international and landed without clearance. Pilot did not see any light gun signals from tower. Aircraft landed without further incident.
As the FAA filed it
(-23) PILOT WAS ON FLIGHT TO SALT LAKE CITY AT NIGHT. PILOT WAS INSTRUCTED TO SWITCH TO TOWER FREQUENCY, PILOT COMPLIED AND WAS NOT ABLE TO MAKE CONTACT WITH TOWER. AT THAT TIME PILOT NOTED A DISCHARGE INDICATION ON THE AMMETER, PILOT TURNED OFF ALL UNNECESSARY ELECTRONICS, ATTEMPTED TO SWITCH TO EMERGENCY CODE ON TRANSPONDER BUT INADVERTENTLY SELECTED 7500. PILOT ONLY HAD SMALL KEY CHAIN FLASH LIGHT IN COCKPIT. COCKPIT LIGHTS BEGAN TO DIM AND WENT OUT. PILOT WAS LOOKING FOR BOUNTIFUL SKYPARK AIRPORT AND REALIZED HE WOULDN'T BE ABLE TO TURN ON RUNWAY LIGHTS BECAUSE OF ELECTRICAL FAILURE SO HE HEADED FOR RUNWAY 17 AT SALT LAKE INTERNATIONAL AND LANDED WITHOUT CLEARANCE. PILOT DID NOT SEE ANY LIGHT GUN SIGNALS FROM TOWER. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT.