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Volume/Power/
1
Squelch Knob
Frequency Swap
2
(flip-flop)
Line Select Keys
3
(LSK)
* COM/NAV Manual
4
Tuning Knob (Push for
NAV & Transponder)
Page Function Keys
5
(two-way rocker)
SVS**, FMS, MAP, AUX
FMS Knob (context-
6
sensitive: scroll, zoom/
push to select)
7
Clear (delete)
8
Enter (select)
To start an FMS edit, either:
1. Press the
2. Push the
3. Tap the screen in the same field twice.
*VHF COM/NAV controls appy to IFD550/IFD540 only
**SVS Page Button applies to IFD550/IFD545 only.
9
10
11
12
13
14
15
16
ENTR function key,
8
bottom right knob, or
6
Frequency
Nearest
Procedure
Direct To
CDI Nav Source
Active Waypoint
Standby Frequency*
Active Frequency*
3
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