Exhaust distance guidelines specify measurements from which part of the aircraft?

• A. Rear
• B. Nose
• C. Wingtip
• D. Tailplane

Answer: (A)

Exhaust distance guidelines hinge on keeping enough clearance behind the engine where hot gases and heat radiate. Because the exhaust exits toward the rear, the measurement reference is the rear of the aircraft—the area around the exhaust outlet and tailward surfaces. This ensures you accurately account for heat and debris that could damage components such as the tail, fuselage behind the engine, or nearby structures. Measuring from the nose, wingtip, or a forward reference wouldn’t reflect the actual danger zone, since the exhaust plume and heat originate from the rear.