Pressure Altitude!

[troy_99992000]

Pressure Altitude!

Hi, Just doing some revision,. I wanted to make sure I am accurate with regards to calculating the Pressure altitude at an airfield.

Here goes;

The air field in question is at an altitude of 200 feet. The QNH at that moment and time is 1010hpa.

So,

1013 hpa ISA – 1010hpa = 3hpa

3hpa * 30 feet (30 feet per hpa) = 90 feet.

Airfield elevation @ 200feet + 90 feet = 290.

So the pressure altitude for that airfield is 290 Feet.


Please let me know if I’m right as I want to consolidate this issue.


Thanks a mill in advance!

Troy.

[Send Clowns]

Correct.

[troy_99992000]

Thanks

Thanks Man!



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[A251]

send clowns correct me if i'm wrong, i'll tell you why in the morning but this is the prof pilot forum, so its an atpl exam.

so its 27ft per hpa(30ft is used for ppl)

ted

[Send Clowns]

Typical JAA (in)consisentcy - use 27 ft/hPa unless otherwise specified. Sorry, but it's what we have to live with!

[Captain Ratpup]

Yep, they screwed me with that one in the met exam. There's me trying to be super accurate at 27ft/hpa but NO it's 30! And, sure as hell is hot, both answers were on the multiple choice list.

Ratpup

[RVR800]

Yes lets deliberately generate confusion.

Safety is no accident!