From what I remember from a WW2 training video, you begin the landing 1/3 flaps. If you’re close to stall speed, the drag from unexpected full flaps could be en

From what I remember from a WW2 training video, you begin the landing 1/3 flaps. If you’re close to stall speed, the drag from unexpected full flaps could be enough to stall the plane. In the reverse hitting flaps up before gear up is likely to cause problems.