As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS AT R/H ROWS 17, 19, 22 AND OUTSIDE LIGHTS AT R/H AFT OVERWING HATCH AND R/H GROUND LIGHT AFT OF FLAP FAILED TO COME ON DURING TEST. GROUNDED - YES. REPLACED POWER SUPPLY AT FS727C BEHIND R/H DADO PANEL IAW B737-800 AMM 33-51-06-960-805. OPS TEST GOOD IAW B737-800 AMM 33-51-00-710-801.