What was found
YKN - CREW REPORTED THE LANDING GEAR WOULD NOT EXTEND WHEN SELECTED. THEY ELECTED TO DIVERT TO GRI, MANUALLY LOWERED THE GEAR, AND ACCOMPLISHED A SUCCESSFUL LANDING. MAINTENANCE CHANGED THE POWER PACK MOTOR, THE RT SQUAT SWITCH, AND THE POSITION INDICATOR DIODE. A SUCCESSFUL GEAR SWING AND TEST WERE ACCOMPLISHED.