As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE GEAR WOULD NOT RETRACT AFTER TAKEOFF. HAD A RED NOSE GEAR LIGHT AND A FLUSH INDICATOR. RETURNED SFO WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED STRUT SEALS AND SERVICED NOSE LANDING GEAR STRUT. REMOVED AND REPLACED D1-31 NOSE GEAR POSITION UP SENSOR AND P1-1156 CONNECTOR. SYSTEM GROUND CHECK NORMAL OPERATION. (CLOSED)