14 / 20
An aircraft is making a 2D (LNAV) approach under IMC, to an aerodrome where the temperature is significantly different from ISA. Which of the following is correct regarding temperature corrections to the MDA?
  • A
    The Controller will pass on a correction when the temperature is much lower than ISA.
  • B
    The Pilot-In-Command is responsible for making a correction if the temperature is much higher than ISA.
  • C
    The Controller will pass on a correction when the temperature is much higher than ISA.
  • D
    The Pilot-In-Command is responsible for making a correction if the temperature is much lower than ISA.

If the temperature is lower or colder than ISA, then the aircraft's true altitude will be lower than the indicated altitude and a correction needs to be made to all minimum altitudes/heights to maintain the required separation from terrain.

LNAV is a GNSS (RNAV) approach using internal aids (GPS) for a non-precision (2D) approach, where no vertical guidance is provided, only lateral. The pilot must calculate a rate of descent and normally use a Continuous Descent Final Approach (CDFA) method.

Therefore, the pilot is responsible for temperature error corrections and cannot rely on ATC.

Your Notes (not visible to others)



This question has appeared on the real examination, you can find the related countries below.