The updateable database includes not only a full Jeppesen complement of aviation information, including approach guidance, but also an impressive surface library for automotive use including the usual major routes, lakes, rivers and railroads. Even knowing where you are in relation to major roads, which you can do without the MetroGuide, is a huge advantage. And, of course, using the fast-growing array of dedicated GPS instrument approaches is taboo with this unit. To be most effective in the backup role, a portable navigator should be reasonably intuitive to use under pressure, right out of the flight bag. The basics should be easy, and with the GPSMap 295 they are.
Chances are, the pilot in extremis simply wants to go directly to an airport or other navaid.
Push enter, and it can then be used to scroll through the letters and numbers to come to the appropriate identifier. With the map screen showing, a touch of the enter key clears the surface data from the screen, leaving only aviation information. If they use it in their cars, for instance, they can stay up to speed on the data-entry methods. But the software is complex enough that leaving it in the flight bag for months, then pulling it out in the heat of an emergency, could produce confusion. It also pays to reread the manual occasionally, although in my opinion the booklet does a relatively poor job of instruction.