Figure 2-2 - Acceptable - Garmin Apollo CNX80 Installation Manual

2.5.3.2 CDI/HSI Source Selection Annunciator
The CNX80 has the capability to switch between its internal VOR/ILS receiver and GPS receiver when
driving a CDI/HSI. If the CNX80 cannot be mounted such that the on-screen CDI/HSI source selection
annunciation is entirely within the acceptable area shown in Figure 2-2, a CDI/HSI Source Selection
Annunciator will be required to annunciate which source is presently driving the switched CDI/HSI. This
annunciator MUST have illuminated NAV and GPS annunciations (i.e. the GPS and NAV text must be
illuminated). The preferred location for this annunciator is on the same side of the switched CDI/HSI as
the CNX80. A CDI/HSI with a built-in NAV/GPS annunciation may also be used in lieu of a separate
external annunciator to satisfy the annunciation requirement.
Glareshield
ACCEPTABLE AREA FOR
CDI/HSI SOURCE SELECT
ANNUNCIATION
2
NOTES:
1. FOR AIRCRAFT WITHOUT THE BASIC INSTRUMENT 'T' CONFIGURATION, THE CENTER OF THE PILOT'S YOKE
SHOULD BE USED TO DETERMINE THE CENTERLINE.
2. FOR AIRCRAFT WITHOUT THE BASIC INSTRUMENT 'T' CONFIGURATION, THE LOWER LIMIT OF THE
ACCEPTABLE ANNUNCIATION AREA SHOULD BE 3.25 INCHES BELOW THE BOTTOM OF THE LOWEST
INSTRUMENT TYPICALLY FOUND IN THE BASIC 'T'.
3. FOR AIRCRAFT IN WHICH THE TYPE CERTIFICATED CDI OR HSI LOCATION IS BELOW THE BASIC 'T', THE LOWER
LIMIT OF THE ACCEPTABLE ANNUNCIATION AREA SHOULD BE THE BOTTOM OF THE CDI OR HSI.
4. IF THE ENTIRE CNX80 ON-SCREEN CDI SOURCE SELECTION ANNUNCIATION IS WITHIN THE ACCEPTABLE
AREA, AN EXTERNAL CDI/HSI SOURCE SELECTION ANNUNCIATOR IS NOT REQUIRED.
5. IF THE CNX80 CANNOT BE INSTALLED TO PRECLUDE USE OF AN EXTERNAL CDI/HSI SOURCE SELECTION
ANNUNCIATOR, AN EXTERNAL SOURCE SELECTION ANNUNCIATOR MUST BE INSTALLED WITHIN THE
ACCEPTABLE AREA SHOWN ABOVE. THIS ANNUNCIATOR MUST BE COMPLETELY CONTAINED IN THE
ACCEPTABLE AREA.
Figure 2-2 – Acceptable CDI/HSI Source Selection Annunciation Area
Apollo CNX80 Installation Manual
CNX80
ON-SCREEN CDI/HSI
SOURCE SELECTION
ANNUNCIATION
(0.5" x 0.2")
1 in 4
2 in
Pilot's Instrument 'T'
lower limit
3
6.5 in
560-0982-00 Rev D
Location of
CNX80 on-screen
CDI/HSI Source
Selection
Annunciation
upper limit
3.25 in
11 in
13 in
1
Instrument 'T' Centerline
Installation Procedures
bottom edge of
CNX80 must be
within this area to
use the CNX80
internal source
annunciation
4 5
2-7