What considerations exist for en-route diversion airfields in case of engine rough running?

What considerations exist for en-route diversion airfields in case of engine rough running?

• A. Weather is above minima
• B. None
• C. Ensure runway has necessary landing distance
• D. Both A and B

Answer: (D)

When choosing an en-route diversion airfield due to engine rough running, you have to assess two practical safety factors together. First, weather must be at or above the published minima so you can fly a stable approach and have a reliable margin for a potential missed approach or engine-related performance issues. Second, the runway must have enough landing distance to accommodate the degraded performance, possible heavy braking, and a safe stop, with room for a go-around if needed. If only one factor is considered, the field may still be unsuitable: good weather alone doesn’t guarantee you can stop safely on a short or marginal runway, and ample runway length isn’t useful if the weather prevents a safe approach. Therefore, both acceptable weather and adequate landing distance are essential considerations for an en-route diversion.

When choosing an en-route diversion airfield due to engine rough running, you have to assess two practical safety factors together. First, weather must be at or above the published minima so you can fly a stable approach and have a reliable margin for a potential missed approach or engine-related performance issues. Second, the runway must have enough landing distance to accommodate the degraded performance, possible heavy braking, and a safe stop, with room for a go-around if needed.

If only one factor is considered, the field may still be unsuitable: good weather alone doesn’t guarantee you can stop safely on a short or marginal runway, and ample runway length isn’t useful if the weather prevents a safe approach. Therefore, both acceptable weather and adequate landing distance are essential considerations for an en-route diversion.