What was found
BOTH LH OVERWING DOOR EMERGENCY LIGHTS OUT. GROUNDED - YES. REPLACED LH MID BATTERY PACK, OPS CHECK GOOD IAW B737-900 AMM 33-51-06-960-805.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BOTH LH OVERWING DOOR EMERGENCY LIGHTS OUT. GROUNDED - YES. REPLACED LH MID BATTERY PACK, OPS CHECK GOOD IAW B737-900 AMM 33-51-06-960-805.