What was found
(CAN) AN INTERMITTENT NOSE GEAR UNSAFE INDICATION BEGAN CYCLING PASSING 1000` AGL. THIS WAS ACCOMPANIED BY A CYCLING OF THE NOSE GEAR NOISE. A MISSED APPROACH WAS CONDUCTED AND AN ALTERNATE GEAR EXTENSION WAS COMPLETED. A NORMAL APPROACH AND LANDING WAS CONDUCTED WITH NO FURTHER INCIDENT. TAXI TO THE REQUESTED PARKING BAY WAS SUCCESSFULLY ACHEIVED WITHOUT THE USE OF HYDRAULIC NOSE WHEEL STEERING. REPLACED NOSE DOWN LOCK SENSOR (PSEU BITE TEST HAD NOSE DOWN TARGET FAULT) SENSOR CAP 0.047", 5.22MH. OUT OF LIMITS C/O IAW AMM 32-30".