What was found
SFO INFLIGHT T0392/29MAR - NOSE LANDING GEAR WOULD NOT RETRACT. RETURNED TO SFO AND LANDED WITHOUT INCIDENT. REPLACED PROXIMITY SWITCH ELECTRONIC UNIT. SYSTEM GROUND CHECKED NORMAL OPERATION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
SFO INFLIGHT T0392/29MAR - NOSE LANDING GEAR WOULD NOT RETRACT. RETURNED TO SFO AND LANDED WITHOUT INCIDENT. REPLACED PROXIMITY SWITCH ELECTRONIC UNIT. SYSTEM GROUND CHECKED NORMAL OPERATION.