Cub Crafters CC18-180 Pilot Operating Handbook page 434

SECTION 9.14 CUB CRAFTERS
SUPPLEMENTS-GTN 635 CC18-180
During a GPS approach in which GPS accuracy
requirements cannot be met by the GPS receiver for any
GPS approach type, the GTN will flag all CDI guidance and
display a system message "ABORT APPROACH-GPS
approach no longer available". Immediately upon viewing
the message, the unit will revert to Terminal navigation
mode alarm limits.
If the position integrity is within these limits lateral guidance
will be restored and the GPS may be used to execute the
missed approach, otherwise alternate means of navigation
must be utilized.
9.14.4.1.3 LOSS OF COM RADIO TUNING FUNCTIONS
If alternate COM is available:
Communications ........................... USE ALTERNATE COM
If no alternate COM is available:
COM RMT XFR key (if installed) .......... PRESS AND HOLD
FOR 2 SECONDS
NOTE
This procedure will tune the active COM radio the
emergency frequency 121.5, regardless of what
frequency is displayed on the GTN. Certain failures of the
tuning system will automatically tune 121.5 without flight
crew action.
9.14.4.1.4 LOSS OF AUDIO PANEL FUNCTIONS (GMA 35
ONLY)
Audio Panel Circuit Breaker ........................................ PULL
REPORT TC10000AFM
Issued: 02/05/13
Page number 9-14-18 Date of revision: N/A