What can happen if fuel tank venting is improperly configured?

Improperly configured fuel tank venting primarily affects the flow of fuel to the engine. The venting system is essential because it allows air to replace the fuel that is consumed. If the venting is blocked or misconfigured, a vacuum can form within the tank as fuel is drawn out. This vacuum condition can lead to a restriction or complete stop in fuel flow, which can cause the engine to starve for fuel and potentially lead to engine failure.

Moreover, an adequate venting system prevents pressure differentials that could damage the fuel tank or cause operational issues. Therefore, maintaining proper venting is essential for ensuring a consistent and reliable fuel supply to the engine during flight.