Garmin GNC 420AW, Installation Manual

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400W Series Installation Manual Page 2-9
190-00356-02 Rev. G
Figure 2-2. Source Selection Annunciation Field of View
2.5.1.2 GPS Navigation Annunciation
Use the steps below to determine whether or not the integrated GPS navigation annunciation displayed on
the 400W Series unit to be installed is within the acceptable field-of-view (see Figure 2-3):
1. Determine the pilot’s primary view centerline, as defined in Step 1 of Section 2.5.1.1.
2. Measure the horizontal distance from the primary view centerline to the left or right edge of the
400W Series, as appropriate.
3. If the 400W Series unit is mounted to the right of the primary instruments, the internal display of
annunciation within the 400W Series unit is considered to be within the acceptable field-of-view
if the following criteria are met:
•
The left edge of the 400W Series unit is within 13.4 inches of the primary view centerline
and;
•
the top edge of the 400W Series unit is no lower than the bottom edge of the primary flight
instruments or the unit is line abreast with the affected CDI.
4. If the 400W Series unit is mounted to the
left
of the primary instruments, the internal display of
annunciation within the 400W Series unit is considered to be within the acceptable field-of-view
if the following criteria are met:
•
The right edge of the 400W Series unit is within 12.2 inches of the primary view center line
and;
•
the top edge of the 400W Series unit is no lower than the bottom edge of the primary flight
instruments or the unit is line abreast with the affected CDI.
If the internal display of GPS navigation annunciation within the 400W Series unit does not meet the
criteria for acceptable field-of-view as defined above, an external annunciator unit must be installed
within 16.805 inches of the view centerline.