Glove Qualification Procedure - Garmin GTN 725 Cockpit Reference Manual

GLOVE QUALIFICATION PROCEDURE

This procedure is used to qualify a specific glove for use with the GTN
system by guiding the user through a variety of tasks that use the touchscreen.
Due to differences in finger size, glove size, and touchscreens between the
6XX or 7XX unit, the qualification granted by this procedure is specific to the
pilot/glove and 6XX or 7XX combination. GTN 7XX and 6XX units must be
evaluated separately.
The GTN touchscreen uses capacitive touch technology to sense the
proximity of skin to the display. A glove increases the distance between skin
and the display glass and may reduce the ability of the GTN to detect touches.
Therefore, when selecting a glove for use with the GTN, thinner gloves tend
to work better than thicker gloves. Leather gloves and gloves designed to
work specifically with capacitive touchscreen devices are often found to be
acceptable. Additionally, altering your touch technique to use the pad of
your finger to touch the unit rather than the tip will increase the touchscreen
sensitivity while using gloves.
This qualification must be completed on the ground. Performing this
procedure in flight is not authorized. "Tests Required for Glove Qualification"
table contains tasks that are required to qualify a glove. "Test Not Required
for Glove Qualification" table contains tasks that are not required to qualify a
glove, but may limit the manner in which some functions are accessed while a
glove is worn.
1. Sit in the pilot's seat.
2. Start the GTN in Demo mode by pressing and holding the Direct To key
during power up.
3. Perform the tasks listed in the following sections with an ungloved hand.
You do not need to record any results for this step.
4. Perform the tasks listed in the following sections with a gloved hand. For
each task, determine whether the operation is the same or worse as it
was without the glove. Record the results in the applicable table. Items
that may cause the operation to be worse include, but are not limited to:
a. Multiple attempts to select a key
b. Unintentional selection of adjacent keys
c. Excessive force on the touchscreen to select a key
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GTN 725/750 Cockpit Reference Guide (CRG)
190-01007-04 Rev. D