How many seconds of coupled flight should be flown prior to intercepting glidepath on a mode I approach?

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Multiple Choice

How many seconds of coupled flight should be flown prior to intercepting glidepath on a mode I approach?

In this case the goal is to establish a stable, automated flight path before committing to the glidepath. Allowing about 30 seconds of coupled (autopilot) flight gives the system time to capture both the localizer and the glideslope, settle into the correct descent profile, and bring the aircraft to the proper pitch, power, and trim. This helps ensure the intercept occurs on a smooth, stable path with appropriate airspeed, reducing the chance of an abrupt or aggressive interception. If the guidance signals aren’t stabilizing after that interval, procedures cover how to proceed, but under normal operation, thirty seconds of assisted flight sets you up for a clean, controlled glidepath intercept.

In this case the goal is to establish a stable, automated flight path before committing to the glidepath. Allowing about 30 seconds of coupled (autopilot) flight gives the system time to capture both the localizer and the glideslope, settle into the correct descent profile, and bring the aircraft to the proper pitch, power, and trim. This helps ensure the intercept occurs on a smooth, stable path with appropriate airspeed, reducing the chance of an abrupt or aggressive interception. If the guidance signals aren’t stabilizing after that interval, procedures cover how to proceed, but under normal operation, thirty seconds of assisted flight sets you up for a clean, controlled glidepath intercept.

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