Which locking position are the bayonets inserted into the bayonet receivers on the helmeted version?

The correct answer identifies the second locking position as the appropriate position for the bayonets to be inserted into the bayonet receivers on the helmeted version. In this context, the second locking position is specifically designed for secure attachment of the helmet components, which ensures stability and safety during flight operations. This position accommodates the necessary adjustments while allowing the aircrew member to quickly don or doff the helmet without compromising the integrity of the equipment.

Understanding the mechanics of the bayonet system is critical for proper use and safety; other positions may not provide the necessary reliability or may interfere with the functionality of the helmet. Each locking position has its designated purpose and ensuring that bayonets are in the correct position can prevent operational issues and enhance overall safety.