oly720man
Posts: 5771
Joined: Fri May 21, 2004 7:13 am

Aircraft Altimeter Pressure Setting

Tue Sep 02, 2008 12:51 pm

What's the highest setting that's usually available on aircraft, in hPa or in. Hg? Only asking because of a news report from New Zealand saying that there could be a high pressure of 1049hPa which is about 31 in Hg.

http://www.nzherald.co.nz/section/1/story.cfm?c_id=1&objectid=10530113
wheat and dairy can screw up your brain
 
wilco737
Posts: 7275
Joined: Sun Jun 20, 2004 12:21 am

RE: Aircraft Altimeter Pressure Setting

Tue Sep 02, 2008 7:51 pm



Quoting Oly720man (Thread starter):
available on aircraft, in hPa or in. Hg

We can set out altimetet to 1084 hPa which is enough. And I am not 100% sure abuot the lowest, but it should be around 850 or so. And to convert hPa to inHG use 33.865  Wink

WILCO737 (MD11F)
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oly720man
Posts: 5771
Joined: Fri May 21, 2004 7:13 am

RE: Aircraft Altimeter Pressure Setting

Wed Sep 03, 2008 8:33 am



Quoting WILCO737 (Reply 1):
We can set out altimetet to 1084 hPa which is enough.

Thanks for that. I have vague memories of reports from quite a few years ago when the pressure was so high over Alaska at the time, it was almost off the top of the pressure setting range on the altimeter.
wheat and dairy can screw up your brain
 
wilco737
Posts: 7275
Joined: Sun Jun 20, 2004 12:21 am

RE: Aircraft Altimeter Pressure Setting

Wed Sep 03, 2008 8:36 am



Quoting Oly720man (Reply 2):

I don't know how it is with other aircrafts. I was only talking about the MD11. I think on our 737s the max was 1054.... But I am not sure here either. too long ago  Wink

WILCO737 (MD11F)
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