What was found
AIRCRAFT WAS GROUNDED: FOUND CABIN E LIGHT BATTERY PACKS DEAD. REMOVED AND REPLACED B5-23, B5-27, B5-28, B5-100, B5-101, B5-102, B5-103, B5-104, B5-105, B5-106, B5-107, AB5-1, AB5-2, AB5-3, AB5-4 IAW AMM 33-53-00, OPS CHECKS GOOD. SEE SDR AALA201909039001