As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 600-HOUR FIRE EXTINGUISHER VOLT CHECK, FOUND NO POWER TO NR 1 ENGINE RESERVE SYSTEM AND MAIN SYSTEM WAS INTERMITTENT. TEE HANDLE CONSISTS OF 8 MICROSWITCHES. WHEN TEE HANDLE WAS PULLED, SLIDER BAR FORCED TAB DOWN TO ENGAGE MICROSWITCHES. SLIDER BAR WAS LOOSE AND TAB SLIGHTLY BENT PREVENTING ENGAGEMENT OF TWO OUTBOARD MICROSWITCHES.