What is the head-of-stand height restriction?

• A. 2 meters.
• B. 4 meters.
• C. 3 meters.
• D. 5 meters.

Answer: (C)

The idea behind the head-of-stand height restriction is to ensure there’s enough vertical space on the stand so that equipment and personnel don’t collide with overhead obstacles like lights, signage, or other structures on the apron when a vehicle is on the stand. The standard limit is three meters, which covers the height of most common ground-service equipment while still providing a safe margin beneath overhead features. If a piece of equipment would exceed this height, it wouldn’t safely operate on that stand and would require a different stance or additional clearance arrangements. The other numbers would either be too restrictive for normal operations or too tall for the typical apron clearance, increasing the risk of contact with overhead objects.