What was found
AFTER TAKE OFF, THE LANDING GEAR LEVER LATCH FAILED TO RELEASE. LANDING GEAR LEVER COULD ONLY BE RAISED TO OFF POSITION. HORN SOUNDED WHEN FLAPS RETRACTED FROM 5 DEG. TO 2 DEG. REMOVED AND REPLACED M831 AIR SENSING SENSOR PER AMM 32-09-221-4 AND PERFORM TEST PER AMM 32-09-221-5. REMOVED AND REPLACED LANDING GEAR ELECTRONIC MODULE PER 32-09-121-4. LANDING GEAR ELECTRONIC MODULE TEST DUE. IN LIEU OF JACKING THE AIRPLANE AFTER LANDING GEAR SAFETY SENSOR PERFORMED EA 7-3210-132925 . ALTERNATE TEST PROCEDURE. SENSOR TEST OK. LANDING GEAR ELECTRICAL/ELECTRONIC MODULE ADJUSTMENT/TEST NORMAL PER AMM 32-09-121-5.