Which factor is NOT listed as affecting the aircraft's allowable cargo load?

Which factor is NOT listed as affecting the aircraft's allowable cargo load?

• A. Wind
• B. Humidity
• C. Altitude
• D. Crew fatigue

Answer: (D)

Allowable cargo load is governed by the aircraft’s weight and balance limits and its performance under the given operating conditions. Environmental factors that change lift and power—wind (affecting stability and control during pickup and load), altitude (air density decreases with altitude, reducing lift and engine/rotor effectiveness), and humidity (through density altitude, which alters rotor and engine performance)—can all shift the maximum safe payload. Crew fatigue, while critically important for safety and decision-making during the operation, does not change the published payload or balance limits themselves. It affects how safely those limits are executed, but not the numerical allowable cargo load. Therefore, the factor not listed as affecting the allowable cargo load is crew fatigue.

Allowable cargo load is governed by the aircraft’s weight and balance limits and its performance under the given operating conditions. Environmental factors that change lift and power—wind (affecting stability and control during pickup and load), altitude (air density decreases with altitude, reducing lift and engine/rotor effectiveness), and humidity (through density altitude, which alters rotor and engine performance)—can all shift the maximum safe payload. Crew fatigue, while critically important for safety and decision-making during the operation, does not change the published payload or balance limits themselves. It affects how safely those limits are executed, but not the numerical allowable cargo load. Therefore, the factor not listed as affecting the allowable cargo load is crew fatigue.