What was found
DURING CRUISE AT FL 390, TAKEOFF CONFIGURATION LIGHTS ILLUMINATED, HORN STARTED SOUNDING. R & R THE GROUND SPOILER INTERLOCK VALVE IAW AMM.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING CRUISE AT FL 390, TAKEOFF CONFIGURATION LIGHTS ILLUMINATED, HORN STARTED SOUNDING. R & R THE GROUND SPOILER INTERLOCK VALVE IAW AMM.