Altimeter setting question below?

A pilot departs an airport with a given setting of 29.92Hg. If his destination give him the setting 28.92Hg but he doesn t change it, will the aircraft fly 1000 feet above or below the indicated altitude?

In my mind 28.92 is a lower pressure so he would be flying 1000ft above his indicated altitude but I know that s wrong. can someone explain why please

2 Answers

  • 1 month ago

    An area of high pressure to an area of low pressure the aircraft will be lower than what it indicates if there is no change to the sub-scale setting on the altimeter.

    Simple phrase to remember...  --- "HIGH TO LOW, LOOK OUT BELOW"  meaning if you fly from a high pressure to a low pressure you will be LOWER than indicated altitude. Thus the ground will be closer to the aircraft!  Here is a good article with pictures and good explanations.

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  • Anonymous
    1 month ago

    The setting is the pressure that would normally exist at sea level. Flying into an area where the pressure is lower would erroneously indicate a HIGHER altitude than real, since pressure drops when flying higher.

    Wanting to keep the same indicated altitude would mean flying lower.

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