What was found
AIR TURNBACK TO PHX, DUE TO NR 4 SLAT FAILED TO RETRACT AFTER TAKEOFF. AIRCRAFT MADE AN UNEVENTFUL LANDING (LGPAGE 99546). REMOVED AND REPLACED FLAP/SLAT MODULE AND FULL EXT SENSOR AS REQ PER BOEING MM. OPS CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIR TURNBACK TO PHX, DUE TO NR 4 SLAT FAILED TO RETRACT AFTER TAKEOFF. AIRCRAFT MADE AN UNEVENTFUL LANDING (LGPAGE 99546). REMOVED AND REPLACED FLAP/SLAT MODULE AND FULL EXT SENSOR AS REQ PER BOEING MM. OPS CHECK GOOD.