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Posted for Clark Baker <cbaker@elliottadvisors.co.uk>:
<<I'd also love to hear about your experience with the GRT EFIS -Rob <<
Rob,
My impressions so far with the GRT EFIS have been very positive on our 22
hour Atlantic Crossing. The engine monitoring system in excellent, and is
one of the strong features. It is highly customizable, with full alert
capabilities and GRT is continuing to update and improve the software. I
especially liked all the information and the trend monitoring when 300nm
from dry land.
We didn't have a chance to use the map pages much. I already had the GNS
530 and Sandel HSI so I continued to just use them. Big key feature appears
to be a good database and FREE updates. When the ARINC 429 interface is
ready, the EFIS will be able to faction as the VOR/LOC/GS head for the 530.
I was very happy with the PFD screen. The information and layout are well
done. Before the trip, Pete Zacaganino put the plane through some very
aggressive manoeuvres ours to test the quality of the attitude data. The
instrument performed extremely well, with no noticeable errors or lag.
Readability in all conditions has been very good. I understand the attitude
information will work completely independent of magnetic, gps, or air data
information and perform at an acceptable level. However, these 3 inputs
improve the quality of the attitude data under more demanding flight
regimes.
The quality of the components and display appear extremely high. Customer
support from Greg and Todd, like usual, has been excellent. However, bear
in mind that they are still adding features, revising the operating manual,
etc.
Compared to the traditional mechanical instruments, it appears the way to
go. Previously, I had two RCAllen 12v gyros (over $2000 each), plus the
usual steam gauges. The GRT appears to be a quantum leap in functionality,
reliability, and safety, at a nominally higher price (cheaper in the long
term?). The leap in functionality versus the standard 6 pack is amazing.
Plus, weight savings to boot.
I also ordered the TruTrak Digiflight IIVSGV (lateral and vertical GPS
steering). For now, TT is only shipping the IIVS so that is what I am using
until the VSGV is ready. When GRT and TT complete their software, you will
be able to preselect the altitude and climb rate for the AP from the GRT
EFIS. You can also fly a heading bug from the EFIS.
I have not flown the Chelton/Sierra (only hanger flown) so I can't compare.
But at $25k+ it is in a somewhat different category. I have also not flown
the BMA, buy chose the GRT for its size, design robustness (didn't like all
the complexity of the BMA system), and my very positive experience working
with Greg and Todd over the past 7-8 years. While I always like more
features, my first concern is reliability and basic functionality at
critical times.
Regards,
Clark Baker
http://www.lancair.net/pix/uk/P1010320
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