Transition Level is the point at which the altimeter should be set to which setting in descent?

Transition Level is the point at which the altimeter should be set to which setting in descent?

• A. SPS
• B. QNH
• C. QFE
• D. 1013.25 hPa

Answer: (B)

Transition Level marks the boundary where, during descent, you switch from the standard pressure setting to the local pressure setting. Above this level, the altimeter is set to 1013.25 hPa so you read flight levels. Below that level, you switch to QNH, which is the local sea‑level corrected pressure, so the altimeter reads altitude above mean sea level. This switch gives you an accurate vertical reference for terrain and obstacles as you descend toward the aerodrome. QFE would indicate height above the airfield itself, not above mean sea level, and 1013.25 hPa is the setting used above the Transition Level, not at the boundary in descent.

Transition Level marks the boundary where, during descent, you switch from the standard pressure setting to the local pressure setting. Above this level, the altimeter is set to 1013.25 hPa so you read flight levels. Below that level, you switch to QNH, which is the local sea‑level corrected pressure, so the altimeter reads altitude above mean sea level. This switch gives you an accurate vertical reference for terrain and obstacles as you descend toward the aerodrome. QFE would indicate height above the airfield itself, not above mean sea level, and 1013.25 hPa is the setting used above the Transition Level, not at the boundary in descent.