Features to Consider in Selection of a Non-Aviation Model for Aviation Use

Waypoint Capacity
• Non-aviation units do not contain Jeppesen databases for airspace, airports or navaids nor can they be retrofitted to provide this data at a later time. However, a localized database that is suitable for situational awareness can be created using waypoints. The number of waypoints that can be used to create a localized database should be adequate for the flight area (see Comparison Chart).

Mapping Capabilities
• Non mapping models are adequate for waypoint database input, route entry and navigation using these features, as well as location tracking.
• Mapping models add a built in basemap for general positional reference, and the ability to download additional map detail from MapSource CDROMs (see Comparison Chart). The map may be used in conjunction with other methods for flight planning.

Antenna Configuration
• Models with built in patch antennas cannot be used with an external antenna and need to be positioned horizontally to optimally receive satellite signals; this orientation is often not the best for viewing.
• Models that can be used with an external or removable antenna offer greatest versatility of positioning. Yoke or glare shield mounting are options.
• Units with a removable antenna also offer the option of mounting the antenna remotely within the cockpit and the GPS unit for optimal pilot viewing.

Size and Form Factor
• The physical size and shape of the GPS should be considered with regard to the desired mounting position. Tall units such as the GPS 76CSx and GPS 60CSx series may restrict vision if mounted on the glare shield; an external antenna may be needed for yoke mounting.
• Display size and resolution need to be such that the pilot can actually read the display while flying! (see Comparison Chart)

Battery Life
• All handheld units can be powered from a 12 volt power supply; if this is available, battery life is irrelevant.
• Quoted times should be considered as maximum possible times rather than average expected times (see Comparison Chart).
• Battery life can vary significantly according to the type of batteries used and conditions of use. Lithium batteries will last longer; rechargeable batteries will last for shorter times. Backlight and compass use can significantly decrease battery life.

"Cockpit GPS" by Captain GPS
Click here to access "Cockpit GPS" by Captain GPS, a practical guide to using GPS in the cockpit.

IMPORTANT NOTE: Non-aviation units are to be used for VFR (Visual Flight Rules) only. Terrain clearance altitudes are NOT indicated on any of the units featured below.