What is the exhaust danger area for an engine/APU on a KC-135?

The exhaust danger area for an engine or Auxiliary Power Unit (APU) on a KC-135 is 180 feet. This distance is critical for safety during aircraft operations, as the exhaust can produce very high temperatures and velocities that can be hazardous to personnel and equipment nearby. Understanding the specific danger zones helps ensure that maintenance crews and other personnel remain at a safe distance while the engine or APU is running, thereby minimizing the risk of injury or damage from hot exhaust gases or blast effects.

The selection of 180 feet is based on operational guidelines that take into account the design and performance characteristics of the KC-135 engines. It reflects the distance where the risk of being exposed to dangerous exhaust is significantly reduced, ensuring operations can proceed safely.