Advise the pilot for deviations more than ____ ft off assigned altitudes, _____ KIAS off assigned airspeed, or ____ degrees off assigned heading.

Advise the pilot for deviations more than ____ ft off assigned altitudes, _____ KIAS off assigned airspeed, or ____ degrees off assigned heading.

• A. 100 ft, 10 KIAS, 5 degrees
• B. 50 ft, 5 KIAS, 2 degrees
• C. 200 ft, 15 KIAS, 10 degrees
• D. 25 ft, 2 KIAS, 1 degree

Answer: (A)

When you’re guiding an instrument flight and a pilot drifts from the assigned path, you advise them once deviations exceed practical tolerances. The standard advising thresholds are 100 ft off the assigned altitude, 10 KIAS off the assigned airspeed, or 5 degrees off the assigned heading. These values strike a balance between catching meaningful errors and avoiding overloading the pilot with minor, routine drift caused by wind, instrument errors, or small control inputs. Why this set fits best: 100 ft is enough to catch climbs or descents that could affect obstacle clearance and procedure compliance without reacting to tiny fluctuations. 10 KIAS accounts for wind and atmospheric effects while keeping the speed within the required performance envelope. 5 degrees of heading error is tight enough to ensure you stay on the intended course, especially near procedures or segments requiring precise alignment, but not so tight that normal navigational tolerance triggers constant advisories. The other options would either be too strict or too generous. A tighter set would result in excessive advisories for normal drift, while a looser set could let larger deviations go uncorrected, compromising safety and procedure integrity.

When you’re guiding an instrument flight and a pilot drifts from the assigned path, you advise them once deviations exceed practical tolerances. The standard advising thresholds are 100 ft off the assigned altitude, 10 KIAS off the assigned airspeed, or 5 degrees off the assigned heading. These values strike a balance between catching meaningful errors and avoiding overloading the pilot with minor, routine drift caused by wind, instrument errors, or small control inputs.

Why this set fits best: 100 ft is enough to catch climbs or descents that could affect obstacle clearance and procedure compliance without reacting to tiny fluctuations. 10 KIAS accounts for wind and atmospheric effects while keeping the speed within the required performance envelope. 5 degrees of heading error is tight enough to ensure you stay on the intended course, especially near procedures or segments requiring precise alignment, but not so tight that normal navigational tolerance triggers constant advisories.

The other options would either be too strict or too generous. A tighter set would result in excessive advisories for normal drift, while a looser set could let larger deviations go uncorrected, compromising safety and procedure integrity.