Day time ground slope is?

Day time ground slope is?

• A. 3°
• B. 6°
• C. 4°
• D. 7°

Answer: (D)

Daytime ground slope is set at seven degrees because slope affects helicopter stability during pickup and set-down with a sling load. On sloped terrain, one skid or undercarriage corner sits lower, shifting the aircraft’s weight relative to the rotor wash and the load. This increases the risk of tipping, load contact with the ground, or uncontrolled movement during hoisting. Daylight gives pilots the best ground visibility to judge the pad and manage the approach, so a higher limit is allowed. If the slope exceeds seven degrees, the operation should not proceed; you’d move to level ground or adjust the rigging. The other values are simply lower limits and do not reflect the standard daytime maximum, which is seven degrees; nighttime or limited-visibility conditions typically require a smaller slope allowance.

Daytime ground slope is set at seven degrees because slope affects helicopter stability during pickup and set-down with a sling load. On sloped terrain, one skid or undercarriage corner sits lower, shifting the aircraft’s weight relative to the rotor wash and the load. This increases the risk of tipping, load contact with the ground, or uncontrolled movement during hoisting. Daylight gives pilots the best ground visibility to judge the pad and manage the approach, so a higher limit is allowed. If the slope exceeds seven degrees, the operation should not proceed; you’d move to level ground or adjust the rigging. The other values are simply lower limits and do not reflect the standard daytime maximum, which is seven degrees; nighttime or limited-visibility conditions typically require a smaller slope allowance.