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Thanks Pete,
After doing some reading up on the Chelton and checking the instrument in the airplane (boot up screen), it appears our IDUs have 256 Mb solid state hard drives..
If it truly is an 8 bit machine I can understand why it can only read 64Mb SM cards. I have several and have transferred all flights to a flash drive for the archive records.
I also discovered that from day one, the percent horsepower column displays either 0% or 100%. I thought that was something new, but in going back through the records today, I see it has been that way since the first test flight. DUH!
Any suggestions as to where to look for the missing parameter that is used to calculate it? I do know the OAT probe has not been calibrated, but the MP, FF, RPM, and most everything else has been calibrated or at least checked.
BTW, when I checked with Cobham about where to get data analysis software, they couldn't tell me.
Luckly someone here provided me a copy which quit working on my new laptop (timed out trial period) but I installed it on my old XP and managed to plot every flight since day one. Except a couple where the data didn't get recorded. One of those was the first of four flights the last time I flew it.
Thanks for suggestions as to where to look.
Duane ES#39
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Duane:
Jeppesen has downloadable navigation subscriptions for Chelton. The
one I use is for the whole US, ~$500 per year. It uses an SM card which
you can still buy over the internet, your home computer will have to have an SM
card slot for the 28 day updates. The terrain database requires the units
to be sent in. Cobham sent me the following information as regards my
inquiry about the terrain database:
Unfortunately, updating Terrain databases with the IDU-I is a bit difficult.
This is because the terrain database is typically 250-300MB in size and the
largest SmartMedia card is 128MB. Due to the self-extraction program that we
use, it is difficult for us to break the terrain database into smaller parts
that can fit on a card. In most cases, the Terrain database is updated by
sending the unit(s) back to the factory and the memory is removed from the unit
and updated through a separate process.
While the 2007 Terrain does contain additional databases that make the
terrain more accurate, the 2004 Terrain is still valid and is accurate enough to
meet TAWS requirements.
Hope this helps.
Best regards,
Pete
LNC2, St. Louis |
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