As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD/ALB FLT 6155 - DURING TAXI AT 0700 HOURS ON 8-20-97, AIRCRAFT RETURNED TO GATE DUE TO RT OVERWING EMERGENCY LIGHT INOPERABLE AND EXPERIENCED NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED BATTERY PACK. OPS CHECK OK. AIRCRAFT RELEASED AND RETURNED TO SERVICE. (X)