Appendix C Questions & Answers - Garmin G1000 Pilot's Manual

APPENDIX C QUESTIONS & ANSWERS
QUESTIONS & ANSWERS
This Appendix answers common questions regarding
G1000 system operational capabilities. If a particular
subject is not covered in this Appendix, the index may
be used to find the appropriate section in this manual.
If a sufficient answer is still not found, an authorized
Garmin dealer or contact Garmin directly (see Copyright
page). Garmin is dedicated to supporting its products and
customers.
What is RAIM and how does it affect approach
operations?
RAIM is an acronym for Receiver Autonomous
Integrity Monitoring. RAIM is a GPS receiver function
that performs the following functions:
• Monitors and verifies integrity and geometry of
tracked GPS satellites.
• Eliminates a corrupt satellite from the navigation
solution.
• Notifies the pilot when satellite conditions do
not provide the necessary coverage to support a
certain phase of flight.
• Predicts satellite coverage of a destination area to
determine whether the number of available satel-
lites is sufficient to satisfy requirements.
For RAIM to work correctly, the GPS receiver must
track at least five (5) satellites. A minimum of six (6)
satellites is required to allow RAIM to eliminate a single
corrupt satellite from the navigation solution.
RAIM ensures that satellite geometry allows for
a navigation solution calculation within a specified
protection limit (2.0 nm for oceanic and en route, 1.0 nm
for terminal, and 0.3 nm for non-precision approaches).
The G1000 system monitors RAIM and issues an alert
message when RAIM is not available (see Annunciation
190-00629-00 Rev. B Garmin G1000 Pilot's Guide for the Beechcraft 58/G58
and Alerts Pilot' s Guide). Without RAIM, GPS position
accuracy cannot be monitored. If RAIM is not available
when crossing the FAF, the pilot must fly the missed
approach procedure.
N OT E : I f R A I M i s n o t p r e d i c t e d t o
b e a va i l a b l e f o r t h e f i n a l a p p r o a c h
course, the approach does not become
active, as indicated by the "RAIM not available
from FAF to MAP" message and the INTEG
annunciation flagging.
Why are there not any approaches available for
a flight plan?
Approaches are available for the final destination
airport in a flight plan or as a direct-to (keep in mind
that some VOR/VORTAC identifiers are similar to airport
identifiers). If a destination airport does not have a
published approach, the G1000 indicates "NONE" for the
available procedures.
What happens when an approach is selected?
Can a flight plan with an approach, a departure,
or an arrival be stored?
When an approach, departure, or arrival is loaded into
the active flight plan, a set of approach, departure, or arrival
waypoints is inserted into the flight plan – along with a
header line showing the title of the selected instrument
procedure. The original enroute portion of the flight
plan remains active, unless the instrument procedure is
activated. This may be done either when the procedure is
loaded, or at a later time.
Flight plans can also be stored with an approach, a
departure, or an arrival. Note that the active flight plan
is erased when the system is turned off. Also, the active
flight plan is overwritten when a stored flight plan is
activated.
APPENDIX C
C-1