Garmin Software Version 0719.00 Betriebsanweisung PDF herunterladen (Seite 97)

Garmin G1000 Cockpit Reference Guide for the Socata TBM 850

190-00708-00 Rev. A

SECTION 6 – AUTOMATIC

FLIGHT CONTROL

6-31

Vertical Path Tracking descent to VNV Target

Altitude:

Select VNV ﬂight control:

Press the

VNV

Key to arm Vertical Path Tracking

Mode. The white annunciation ‘VPTH’ appears.

Using the ALT Knob, set the Selected Altitude at

least 75 feet below the ﬂight plan’s VNV Target

Altitude of 10,000 feet. This altitude was entered

in the ﬂight plan as a component of an offset

waypoint from OPSHN intersection as indicated in

the example ﬂight plan in the Navigation section.

If the Selected Altitude is not adequately adjusted

below the VNV Target Altitude, the ﬂight director

will command descent to the Selected Altitude

rather than the VNV Target Altitude once Vertical

Path Tracking Mode becomes active (ALTS is armed

rather than ALTV).

If Vertical Path Tracking Mode is armed more

than 5 minutes prior to descent path capture,

acknowledgment is required for the ﬂight director

to transition from Altitude Hold to Vertical Path

Tracking Mode. To proceed with descent path

capture if the white ‘VPTH’ annunciation begins

ﬂashing, do one of the following:

Figure 6-38 VPTH Descent

Cruise Altitude of 12,000 MSL

VNAV Target Altitude of 10,000 MSL

ALT Mode

VPTH Mode

Selected Altitude (set below VNAV Target Altitude)

TOD

BOD

ALT Mode

3 nm

Along-track Offset, 3 nm before OPSHN

• Turn the ALT Knob to adjust the Selected

Altitude

• Press the VNV Key

If the descent is not conﬁrmed by the time of

interception, Vertical Path Tracking Mode remains

armed and the descent is not captured.

When the top of descent (TOD) is reached, the ﬂight

director transitions to Vertical Path Tracking Mode

and begins the descent to the VNV Target Altitude.

Intention to capture the VNV Target Altitude is

indicated by the white ‘ALTV’ annunciation.

As the aircraft nears the VNV Target Altitude, the

ﬂight director transitions to VNV Target Altitude

Capture Mode, indicated by the green ‘ALTV’

annunciation ﬂashing for up to 10 seconds.

The green ‘ALT’ annunciation ﬂashes for up to

10 seconds upon reaching 50 feet from the VNV

Target Altitude; the autopilot transitions to Altitude

Hold Mode and levels the aircraft at the vertical

waypoint.

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