What was found
RED NOSE GEAR LIGHT ILLUMINATED INERMITTENTLY DURING CLIMB ABOVE 200 KTS. SLIGHT VIBRATION FELT IN RUDDER PEDALS WEHN LIGHT WAS ILLUMINATED. AFTER SLOWING BELOW 200 KTS, RED LIGHT DID NOT REAPPEAR. EXECUTED AN ALTERNATE GEAR EXTENSION AT 175 KTS AND ALL INDICATIONS REMAINED NORMAL. RETURNED TO FIELD. LANDING UNEVENTFUL. DURING TROUBLESHOOTING OF NLG FOUND PRIMARY LOCK SENSOR TO BE INTERMITTENT, TO FAILED CONDITION IN PSEU, WHICH LOGGED A FAULT NGLK1 FAILED. REMOVED NGLK1 SENSOR ASSY REF TASK 32-61-06-400-802, REPLACED NGLK1 SENSOR ASSY REF TASK 32-61-06-400-802 PAR 1-3, PAR 4A (1-10 NA HARNESS COMES AS AN ASSY) CW REMAING PAR 4 (11) TO 5 OPERATIONAL TESTS NORMAL. RETURNED TO SERVICE.