APPENDIX C
Troubleshooting Q & A
196
190-00356-00 Rev B
±
1 NM
IAF
±2 degree
angular
FAF
MAP
+350 ft
Origin = 10,000 ft
past MAP
Full-Scale deflection and defined path for normal approach
±
1 NM
Inbound track to FAF
±2 degree
angular
FAF
MAP
+350 ft
Origin = 10,000 ft
past MAP
Sensitivity must change from ±1 NM FSD to either ±0.3 NM or
±2° FSD, whichever is less at the FAF. Change occurs over 2 NM
and is completed at the FAF.
Full-Scale deflection and defined path for VTF approach
Why does my CDI not respond like a VOR when OBS
mode is active?
Unlike a VOR, the CDI scale used on GPS equipment
is based on the cross-track distance to the desired course,
in OBS mode not an angular relationship to the desti-
nation. Therefore, the CDI deflection on the GPS will be
constant regardless of the distance to the destination, and
will not become less sensitive when you are further away
from the destination.
2 NM
2 NM
2 NM
2 NM
1
NM
1
NM
CDI Comparison: GPS vs. VOR
Summary of Contents for GNC 420AW
Page 1: ...Pilot s Guide Reference 400W Series ...
Page 10: ...INTRODUCTION viii 190 00356 00 Rev B Blank Page ...
Page 70: ...2 NAV PAGES 60 190 00356 00 Rev B Blank Page ...
Page 90: ...4 FLIGHT PLANS 80 190 00356 00 Rev B Active Flight Plan Shortcuts Blank Page ...
Page 154: ...7 NRST PAGES 144 190 00356 00 Rev B Nearest Airspaces Blank Page ...
Page 186: ...10 FDE 176 190 00356 00 Rev B Blank Page ...
Page 213: ......
