True Altitude
Temperature correction for indicated altitude
ft
ft
°C
BELOW INDICATED - terrain clearance reduced
Aircraft is 217 ft lower than altimeter reads. Apply cold temperature correction to all altitudes.
Results
True Altitude4,783ft
Correction-217ft
ISA Temp at Alt5.1°C
ISA Deviation-15.1°C
In cold temperatures, aircraft are lower than the altimeter indicates. The ICAO cold temperature correction table uses airport elevation and OAT to protect obstacle clearance.