What was found
JUST AFTER SELECTING THE LANDING GEAR LEVER TO THE UP POSITION, AFTER TAKEOFF, RECEIVED A GEAR DISAGREE ALONG WITH A NOSE DOOR OPEN WARNING MSG. MAIN GEAR WAS INDICATING UP WITH THE NOSE GEAR STILL IN THE DOWN & LOCKED POSITION. REFERENCED QRH, RELEASED THE GEAR. REPLACED BRACKET FOR PROX SENSOR PS14GA PN ON & OFF 16215-105. ADJUSTED PROX SENSOR PS14GA IAW 32-61-05. PREFORMED OPERATIONS CHECK IAW 32-33-00, ALL CHECKED GOOD SEE NR CONTINUATION CARDS FOR DETAILS.