Garmin Software Version 0530.04 Betriebsanweisung PDF herunterladen (Seite 156)

Garmin G1000 Cockpit Reference Guide for the Cessna 350/400

190-00567-01 Rev. B

SECTION 11 – ABNORMAL

OPERATION

11-2

11.2 ABNORMAL COM OPERATION

When a COM tuning failure is detected by the system,

the emergency frequency (121.500 MHz) is automatically

loaded into the active frequency ﬁeld of the COM radio

for which the tuning failure was detected. In the event of

a dual display failure, the emergency frequency (121.500

MHz) automatically becomes the active frequency to the

pilot through the pilot headset.

11.3 UNUSUAL ATTITUDES

The PFD will ‘declutter’ when the aircraft enters an

unusual attitude. Only the basic primary functions will

be displayed in these situations.

Red extreme pitch warning chevrons pointing toward

the horizon are displayed starting at 50 degrees above and

30 degrees below the horizon line.

Figure 11-2 Extreme Pitch Indication

11.4 STORMSCOPE OPERATION WITH

LOSS OF HEADING INPUT

If heading is lost, strikes and/or cells must be cleared

manually after the execution of each turn. This is to

ensure that the strike and/or cell positions are depicted

accurately in relation to the nose of the aircraft.

11.5 HAZARD DISPLAYS WITH LOSS OF

GPS POSITION

If GPS position is lost, or becomes invalid, selected

hazards being displayed on the Navigation Map Page

will be removed until GPS position is again established.

The icons in the lower right of the screen, indicating the

selected functions for display, will show an ‘X’, as shown

in Figure 11-3.

Figure 11-3 Loss of Hazard Functions

with Loss of GPS Position

11.6 DEAD RECKONING

WARNING: DR Mode is inherently less accurate

than the standard GPS/WAAS Mode due to the

lack of satellite measurements needed to deter-

mine a position. Changes in wind speed and/or

wind direction will compound the relative inac-

curacy of DR Mode. Because of this degraded

accuracy, the crew must maintain position

awareness using other navigation equipment

until GPS-derived position data is restored.

While in Enroute or Oceanic phase of ﬂight, if the

G1000 detects an invalid GPS solution or is unable to

calculate a GPS position, the system will automatically

revert to Dead Reckoning (DR) Mode. In DR Mode,

the G1000 uses its last-known position combined with

continuously updated airspeed and heading data (when

available) to calculate and display the aircraft’s current

estimated position.

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