The E-5 barrier is used in the overrun because of maintenance consideration?

The E-5 barrier is used in the overrun because of maintenance consideration?

• A. It is closer to the runway exit
• B. It requires less power
• C. The extensive time required to reset the barrier
• D. It is visible from the control tower

Answer: (C)

The key idea is how long it takes to restore a barrier after it’s been deployed. The E-5 barrier is chosen for use in an overrun scenario because it takes a significant amount of time to reset. This long reset time makes it practical for maintenance planning: once the barrier is deployed, crews can schedule and perform maintenance without needing a quick, on-the-spot rearm, and the barrier won’t be rapidly cycled or accidentally reactivated during upkeep. In short, the extensive time required to reset the barrier is the maintenance-driven reason for its use in overruns. Proximity to the runway exit, lower power requirements, or visibility from the control tower don’t address maintenance handling or rearming timing, so they’re not the relevant factors here.

The key idea is how long it takes to restore a barrier after it’s been deployed. The E-5 barrier is chosen for use in an overrun scenario because it takes a significant amount of time to reset. This long reset time makes it practical for maintenance planning: once the barrier is deployed, crews can schedule and perform maintenance without needing a quick, on-the-spot rearm, and the barrier won’t be rapidly cycled or accidentally reactivated during upkeep. In short, the extensive time required to reset the barrier is the maintenance-driven reason for its use in overruns.

Proximity to the runway exit, lower power requirements, or visibility from the control tower don’t address maintenance handling or rearming timing, so they’re not the relevant factors here.