As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FT # 2080, FLL-DCA. ALL 6 EMERGENCY LIGHT POWER UNITS FAILED TO STAY ON MORE THAN 15 MINUTES PER FUNCTIONAL TEST STEP 8 OF TASK CARD E190-33-50-01-720-801-M. R & R EMERGENCY-LIGHT POWER UNIT 1 & 2 IAW AMM 33-50-01. OPS CHECK NORMAL. R & R EMERGENCY-LIGHT POWER UNITS 3 & 4 IAW AMM 33-50-01. OPS CHECK NORMAL. R & R EMERGENCY-LIGHT POWER UNIT # 5 & 6 IAW AMM 33-50-01. OPS CHECK NORMAL.