FYI
I believe the Hendricks crash airplane had a "VFR only" GPS installed. Again, as pilots were are scared that the FAA is around every corner and might violate us, so since we are flying a IFR approach, of course we cannot "use" the VFR only GPS, right?
The Hendricks aircraft was equipped with a Bendix/King KLN 90B, but the database was not current for use with IFR approaches.
According to the in depth article on this subject in the Sept. 06 AOPA magazine under "Safety Pilot", the GPS was installed between the seats, which required the pilot or co-pilot to look down and almost 90 degrees away from the panel & instrument scan.
And as I previously mentioned, what you get on a KLN 90B's screen isn't much information compared to today's moving map GPS's. Once passing the airport, all the screen displayed was a black line from the aircraft's symbol, back to the airport.
I set this same scenario up on my Garmin 296 hand-held with a color moving map & terrain/terrain warning features. Instead of a missed approach and climbing right turn, I continued on the runway heading beginning at 1,400' msl., waited for five miles plus another minute, and then began a straight ahead climb to 2600'.
And here is the point; while their old style GPS is showing no more than a black line, my terrain warning box has already came on with a yellow field (terrain within 2000' altitude) of warning X's followed by a red field, meaning terrain is approaching within 100' of my current altitude.
At the same time, my moving map is also showing the airport's locatiion, relative to the aircraft's, as well as terrain shading, plus the fact that the runway center line arrows would depict the airplane as outbound from the airport.
While it appears that the crew was confused regarding the fact that they had already passed the airport and overflew the missed approach point, and possibly have been relying on the GPS's annunciation lights instead of other nav instruments; they were in fact confused, or just didn't realize their real location. Just the same way, the Comair crew apparently didn't realize that the aircraft was pointed down the wrong runway.
Now, I'm not saying to replace paper charts with just electronic boxes, or to depend solely on GPS as a means of navigation. The title of this thread, has to do with what we can learn. I don't believe it's the controllers problem, as stated in the original thread. However, I'm well aware of how far GPS has improved in the last 15 years. And from what I've seen, even my hand-held Garmin will display in your face information at the exact second (as well as before) that the confused pilot apparently needs, even if he/she doesn't yet know it. And a 15" center panel mounted moving screen MFD is even going to show a lot more detail than my hand-held including high resolution airport/runway diagrams.
Since flight into terrain accidents still happen month after month, after month (I've kept track since Frank Sinatra's mother's plane crash a long time ago); I'm quite sure that these newer high tech screens, especially the future models with synthetic 3D terrain imaging, should help in reducing terrain collusions in IMC.
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