What was found
CLIMBING THROUGH 200' AGL, AFTER SWITCHING GEAR HANDLE TO "UP" WE GOT "NOSE DOOR OPEN" & "GEAR DISAGREE WARNING MESSAGES W/ MAINS WHITE-HASHED ("UNKNOW POSITION") & NOSE RED-HASHED. ADJUSTED PROXIMITY SENSOR CLEARANCE OF PS1GA, PS2GA, IAW AMM 32-61-05, OPS CHECK GOOD IAW AMM 32-61-00.