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190-01004-04 Rev. N
GTN 625/635/650 Cockpit Reference Guide
Glove Qualification P
rocedur
e
GLOVE QUALIFICATION PROCEDURE
NOTE:
This procedure is not authorized for completion during flight.
Perform all tasks while the aircraft is on the ground.
The touchscreen uses capacitive touch technology to sense the proximity
of skin to the display. A glove creates a barrier between the skin and the
display glass, potentially reducing the ability of the display to detect touches.
This procedure qualifies a specific glove for use with the touchscreen. Due
to differences in finger size, glove size, and touchscreen between the GTN
6XX and GTN 7XX units, the qualification procedure is specific to the pilot/
glove and GTN combination. Multiple units must be evaluated individually.
Glove Selection Considerations
• Thinner gloves perform better than thicker gloves
• Leather gloves, and gloves designed specifically for use with capacitive
touchscreen devices, are often found to be acceptable
• To improve touchscreen sensitivity while wearing gloves, use the pad of
your finger instead of the tip during touch interactions
Glove Qualification Guidance
• The “Tests Required for Glove Qualification” table contains the tasks
required to qualify a glove
• The “Tests Not Required for Glove Qualification” table contains tasks that
are not required to qualify a glove, but may limit how some functions are
accessed while wearing a glove
Glove Qualification Steps
Complete only the tasks for the capabilities relevant to the installed GTN(s).
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 he following sections, tapping each key with a
non-gloved finger. It is not necessary to record any results for this step.
4. Repeat step 3 using a gloved hand.
5. For each task, determine whether the touchscreen response is the same or worse
than without the glove.
