Garmin G1000 Piper PA-46 Matrix - Manual (Page 435)

190-01108-00 Rev. B Garmin G1000 Pilot’s Guide for the Piper PA-46 Mirage/Matrix 421
AUTOMATIC FLIGHT CONTROL SYSTEM
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EICAS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
Prior to descent path interception, the Selected Altitude must be set below the current aircraft altitude
by at least 75 feet. For the flight director to transition from Altitude Hold to Vertical Path Tracking Mode,
acknowledgment is required within five minutes of descent path interception by:
• Pressing the VNV Key
• Adjusting the Selected Altitude
If acknowledgment is not received within 1 minute of descent path interception, the white ‘VPTH’
annunciation starts to flash. Flashing continues until acknowledged or the descent path is intercepted. If
the descent is not confirmed by the time of interception, Vertical Path Tracking Mode remains armed and the
descent is not captured.
In conjunction with the “TOD [top of descent] within 1 minute” annunciation in the PFD Navigation Status
Box and the “Vertical track” voice message, VNV indications (VNV Target Altitude, vertical deviation, and
vertical speed required) appear on the PFDs in magenta (Figure 7-13).
Figure 7-13 Vertical Path Capture
Vertical Path Tracking
Armed, (Flashing Indicates
Acknowledgment Required)
Altitude Hold
Mode Active
Selected
Altitude
Below VNV
Target
VNV Target
Altitude
Vertical
Deviation
Indicator Required
Vertical
Speed Bug
Terminal
Phase of
Flight
GPS is
Selected
Navigation
Source