As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT LEFT OVERHEAD EMERGENCY LIGHTS STAYED ILLUMINATED FOR THE DURATION OF FLIGHT. GROUNDED - YES. ENTIRE A/C EMERGENCY LIGHTING NOT ILLUMINATED WHEN EMERGENCY LIGHT SWITCH SELECTED TO ON POSITION. FOR REFERENCE CHARGE TIME FRAME. REPLACED LH FWD ENTRY DOOR EMERGENCY POWER SUPPLY PRECAUTIONARY. OPERATION CHECKS OK REFERENCE B737-900 AMM 33-51-06.