Hilton wrote:

How can safety not be compromised when you have to pan and scroll on the
approach? I develop aviation software for the Pocket PC (W&B, FARs, route
planning etc), and a significant amount of development time goes into
usability. I considered adding approach charts and decided that flying an
approach in the clouds using a PDA increased the risk level to a point to
which I was not comfortable. Did I miss out on some revenue? Sure.
However, I am a firm believer in safety, and I cannot believe that flying an
approach using a PDA does not compromise safety.

That's just my opinion.

No doubt that you are right. Safety is compromised by going to electronic
charts without being able to view the entire approach chart. That's why the
high-end stuff has robust portrait-oriented displays. Then again, the high-end
stuff has two engines, single-engine safety from lift-off, real deicing
capability, etc.