November 2007 Issue

Letters: 10/07

I think your comments about EFIS in the September 2007 issue (First Word, page 2) miss the point. The current EFIS design as replicated across many vendors’ products provides a consistent human/computer/airplane interface in much the same way that a six pack of steam gauges provided a consistent interface that allowed a pilot to go from one airplane to another without a lot of retraining. Right now, the pilots of light aircraft are in the process of retraining from steam to EFIS, so now we have to know how to fly two rather different systems of displaying the same information. If every vendor had a different representation of the data, then who knows how many systems we would have to learn? When mistakes can lead to safety issues, some degree of standardization is actually a good thing.

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