What was found
LANDING GEAR WOULD NOT RETRACT. HANDLE IN THE UP POSITION INDICATIONS WERE, 3 GREEN, 1 RED UNSAFE & HYD PRESS ALL ILLUMINATED. NO GEAR MOVEMENT NOTED. CYCLED HANDLE SEVERAL TIMES WITH SAME INDICATIONS EACH TIME. FOUND GEAR BLOW DOWN BOTTLE LOCKED IN EMERGENCY EXTEND POSITION & SAFETIED WITH BREAKAWAY WIRE IN THAT POSITION WITH THE BREAKAWAY WIRE UNBROKEN. RESET EMERGENCY BLOW DOWN BOTTLE & PRESSURE DID NOT CHANGE FROM 1900 PSI. RESET GEAR SHUTTLE VALVE & COMPLETED GEAR OPS CHECK. GEAR SYS OPS NORMAL. PERFORMED GEAR FUNCTIONAL CHECK ALONG WITH EMERGENCY GEAR EXTENSION. NO DEFECTS NOTED, RESET & BLED GEAR SYS. SERVICED N2 BOTTLE & SAFETIED WITH BREAKAWAY WIRE. ALL WORK DONE IAW MM 32-01-00.