What was found
BOS - FLT 4864 - EMERGENCY POWER AMBER LIGHT ILLUMINATES WHEN NR 1 COMM TRANSMITS AND BATTERY POWER ON AIRCRAFT ONLY. TROUBLESHOT SYSTEM. COULD NOT DUPLICATE. SUSPECT FAULTY GPU UNIT. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BOS - FLT 4864 - EMERGENCY POWER AMBER LIGHT ILLUMINATES WHEN NR 1 COMM TRANSMITS AND BATTERY POWER ON AIRCRAFT ONLY. TROUBLESHOT SYSTEM. COULD NOT DUPLICATE. SUSPECT FAULTY GPU UNIT. (M)