As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SPS - FLT 3270 - DURING PREFLIGHT, CREW FOUND THE EMERGENCY LIGHTS WOULD NOT ILLUMINATE DUE TO EMERGENCY ILGHT SWITHC LEFT IN THE ARM POSITION. MAINTENANCE REMOVED AND REPLACED ALL EMERGENCY LIGHT POWER SUPPLY BATTERIES S/N 1248, 1078, 1292 AND 1106 IAW SAAB MM. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)