Garmin G1000 Series, Pilot'S Manual, Page: 313 / 338

Garmin G1000 Pilot’s Guide for the Diamond DA40
190-00592-00 Rev. A C-1
APPENDIX C
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 cus-
tomers.
What is RAIM and how does it affect approach
operations?
RAIM is an acronym for Receiver Autonomous Integ-
rity Monitoring. RAIM is a GPS receiver function that per-
forms 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) sat-
ellites is required to allow RAIM to eliminate a single cor-
rupt satellite from the navigation solution.
RAIM ensures that satellite geometry allows for a navi-
gation solution calculation within a specified protection
limit (2.0 nm for oceanic and en route, 1.0 nm for ter-
minal, and 0.3 nm for non-precision approaches). The
G1000 system monitors RAIM and issues an alert mes-
sage when RAIM is not available (see Annunciation and
Alerts Pilot’s Guide). Without RAIM, GPS position accu-
racy cannot be monitored. If RAIM is not available when
crossing the FAF, the pilot must fly the missed approach
procedure.
N OT E : If RAIM is not predicted to
be available for the final approach
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 air-
port in a flight plan or as a direct-to (keep in mind that
some VOR/VORTAC identifiers are similar to airport iden-
tifiers). 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 ar-
rival 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 acti-
vated. 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 another flight plan is acti-
vated. When storing flight plans with an approach, a de-
parture, or an arrival, the G1000 uses the waypoint infor-