During engine ground turn-up, what distance should be maintained from intakes to prevent being pulled in?

During engine ground turn-up, what distance should be maintained from intakes to prevent being pulled in?

• A. 9 feet
• B. 25 feet
• C. 50 feet
• D. 100 feet

Answer: (A)

The main idea is that the intake of a running engine creates a suction zone near the opening, which can pull you in if you get too close during ground turn-up. To prevent that, a specific minimum clearance is defined so you stay outside the strong pull of the intake. In this scenario, nine feet away from the intake is the distance established to keep you out of the ingestion zone while the engine goes through its turn-up. Distances like twenty-five, fifty, or one hundred feet are not the standard clearance for this particular hazard in this training context; they’re larger than what’s needed to avoid being drawn into the intake during turn-up and would be impractical for normal ground operations.

The main idea is that the intake of a running engine creates a suction zone near the opening, which can pull you in if you get too close during ground turn-up. To prevent that, a specific minimum clearance is defined so you stay outside the strong pull of the intake. In this scenario, nine feet away from the intake is the distance established to keep you out of the ingestion zone while the engine goes through its turn-up.

Distances like twenty-five, fifty, or one hundred feet are not the standard clearance for this particular hazard in this training context; they’re larger than what’s needed to avoid being drawn into the intake during turn-up and would be impractical for normal ground operations.