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Posted By:
Hal Brown
Date Posted:
Jul 11, 2008
Description:
Jackson Hole, Wyoming at 6451' MSL with the Tetons in the background.
Date Taken:
Jul 11, 2008
Place Taken:
KJAC
Owner:
John Spratt
File Name:
0231KJAC.jpg - Photo HTML
Full size - <img src="/show.php?splash=SZTNJ0000h">
Medium - <img src="/show.php?splash=SZTNJ0000m">
Thumbnail - <img src="/show.php?splash=SZTNJ0000s">
Category:
242, Searey Adventures,
225, Searey Suitable Destinations,
302, Sierra Seareys
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Click on photo to view the original size. |
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Read what others had to say:
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Gene Hammond - Jul 14,2008
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John,<br /><br />Being a Searey owner and flatlander I'm curious that if you landed at JAC, what was the length of the ground run, climb rate, and ground temperature?<br /><br />I've skiied Jackson Hole several times and this old body had its own problems on some of those runs.
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John Spratt - Jul 14,2008
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We didn't land at KJAC, but flew by at 10,500 MSL. The 914 thinks it is at sea level up to a pressure altitude of 8000 feet and gets full 115 hp up to that pressure altitude (not density altitude). The TCU on the 914 only cuts back the manifold pressure at temps above 160ºF depending on the serial number of the TCU. I have never had a temperature cutback at the altitudes we fly the Searey, below 14,000 MSL. My highest takeoff was at an elevation of 7800 MSL off of Marlette Lake, which was about 22 seconds with two people. I normally takeoff with only climb power, 35.5inHg on land and use full power only for water takeoffs. On Lake Tahoe where I normally fly, the summer temps of 80ºF give a density altitude of around 8500 feet. I don't notice the difference between that and sea level. It might make a difference of a few seconds.
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Philip Mendelson - Jul 15,2008
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John, Thanks for taking us along for the ride!!! For us Florida boys, any tips on Mountain<br />flying? Winds, temps etc.?
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John Spratt - Jul 15,2008
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It's all part of the service! As for tips, 1.) Fly early as there are normally less convective issues. 2.)When the winds aloft are forecast more than about 15 knots, don't go. An inflight wind readout like the Dynon EFIS conncected to a GPS is realtime information. 3.) River valleys, when available, are a good pass through mountains, as there is usually flat farm land adjacent to the rivers and water to land on if needed. 4.)When crossing a mountain range a couple thousand feet higher than the mountains tends to keep the Searey out of the bumps. When the winds aloft are more than about 15 knots down drafts can easily exceed the climb capability of the Searey, even with a turbo. 5.) Get some local knowledge where ever possible.
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