Instrument Rating Exam · Mock exam

An aircraft is operating in an area where the temperature is significantly colder than the International Standard Atmosphere (ISA). What effect does this have on the actual height above terrain compared to the altimeter indication?

• A.The aircraft is higher than the altimeter indicates
• B.The aircraft is lower than the altimeter indicates
• C.There is no effect
• D.The altimeter reads higher in cold air, so the aircraft has more terrain clearance than indicated