When turning to downwind at Spencer, what is the required elevation?

• A. 200 MSL
• B. 204 MSL
• C. 150 MSL
• D. 200 AGL

Answer: (A)

The correct elevation for turning to downwind at Spencer is 200 MSL (Mean Sea Level). This altitude is specifically established to ensure safe operations in the airspace surrounding the airport.

Maintaining 200 MSL allows pilots to remain above any obstacles that may exist in the surrounding area, while also adhering to the local traffic patterns. This standard altitude helps to create a buffer zone that enhances safety during the transition from the base leg to the downwind leg of the traffic pattern.

The choice of 200 AGL (Above Ground Level) would not be appropriate in this context, as elevations expressed in AGL can vary significantly based on the topography of the land around the airport. In contrast, using MSL provides a consistent reference point regardless of the surface elevation.

Other specific altitudes like 204 MSL or 150 MSL may not align with the established traffic pattern requirements for this airspace, as they could potentially place an aircraft at risk of being either too high or too low during critical phases of flight. Thus, the requirement of 200 MSL serves to standardize the pattern altitude and enhance operational safety.