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funchal elevation query (Read 1358 times)

Apr 7^th, 2012 at 1:27am

gpgibson Offline
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i was trying to land at funchal (madeira) LPMA rwy 5
the approach plate gives the threshold at 147ft but when i eventually landed my altimeter was reading 714 ft my altimeter was set at 29.92 why the discrepancy?

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Reply #1 - Apr 7^th, 2012 at 6:05am

C Offline
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The most obvious answer is the QNH at Funchal wasn't 1013/29.92, hence your altimeter was incorrectly set.

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Reply #2 - Apr 7^th, 2012 at 11:21am

gpgibson Offline
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QNH was set at 29.92 for fenchal (local) I even flew a cessna at 100 ft above sea level ( couldnt go any lower) then i landed at fenchal and my altimeter still read 720 feet on the tarmac.....if for instance i sit on the tarmac at east midlands (EGNX) and set the altimeter to 29.92 it read 310 feet which is correct according to pooleys....

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Reply #3 - Apr 7^th, 2012 at 11:50am

dave3cu Offline
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In FSX LPMA is poorly done, no doubt to accommodate the poor terrain elevaton map.

The airport elevation listed in the FSX map is 711ft.

At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation. Igor Sikorsky

I intend to live forever....so far, so good. Steven Wright

You know....you can just rip up a to-do list.

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Reply #4 - Apr 7^th, 2012 at 11:54am

gpgibson Offline
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thank god for that i thought i was losing it, i was working from an approach plate, so FSX is giving incorrect info then? phew!!

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Reply #5 - Apr 7^th, 2012 at 1:52pm

C Offline
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gpgibson wrote on Apr 7^th, 2012 at 11:54am:

thank god for that i thought i was losing it, i was working from an approach plate, so FSX is giving incorrect info then? phew!!

Isn't Funchal built partially on stilts on the side of a hill on the sea front. Probably explains it then.

That aside, you shouldn't be flying in Europe on 29.92 (or in.Hg) anyway! Grin

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