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-   -   Some Basic Question about QFE (https://www.pprune.org/tech-log/537730-some-basic-question-about-qfe.html)

FlyingDumbo 10th April 2014 17:21

Some Basic Question about QFE
 
Assume
Elevation 931ft
QNH 1003Mb
Temperature 9 'c

What would the QFE setting be on the altimeter if aircraft on ground and altimeter=ZERO

Also What is the density Height at this port? :ugh:

I am beginner of this area:sad:

AirborneAgain 10th April 2014 20:06

A quick estimate (assuming 27 ft/hPa) gives a QFE of 968 hPa. The temperature doesn't affect the QFE-QNH relationship.

The pressure altitude is about 1200 ft (again assuming 27 ft/hPa). The temperature is approximately ISA-3.5°C so the density altitude is about 800 ft (assuming a density altitude change of 118.8 ft/°C ISA deviation).


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