Approach Mode can be armed for an ILS or LPV approach when the aircraft is within how many degrees of the inbound course?

• A. 105 degrees
• B. 30 degrees
• C. 180 degrees
• D. 0 degrees

Answer: (A)

Approach mode arming is about when the autopilot is allowed to start guiding you along a localizer/LPV approach. The system uses a capture window so it doesn’t lock onto the wrong signal as you turn to the approach course. In the PC-12 NGX, you’re permitted to arm that mode when you are within 105 degrees of the inbound course. That means you can arm the approach while you’re fairly offset from the exact centerline, giving you flexibility to intercept the course smoothly as you align with the runway. If you’re farther than 105 degrees off the inbound course, arming isn’t allowed, preventing inadvertent capture of the wrong course. The other options would either be too restrictive or impractical for interception and capture, so 105 degrees is the designated arming window for ILS or LPV approaches.