Vertical Navigation (Vnv) Indications - Garmin Cirrus Perspective SR20 Pilot's Manual

FLIGHT INSTRUMENTS

VERTICAL NAVIGATION (VNV) INDICATIONS

When a VNV flight plan has been activated, VNV indications (VNV Target Altitude, RVSI, VDI) appear on the
PFD in conjunction with the "TOD within 1 minute" message and "Vertical track" voice alert. See the Flight
Management and AFCS sections for details on VNV features. VNV indications are removed from the PFD
according to the criteria listed in Table 2-2.
GPS is
Selected
Navigation
Source
Aircraft > 1 min before the next TOD due to flight plan change
VNV cancelled (CNCL VNV Softkey pressed on MFD)
Distance to active waypoint cannot be computed due to
unsupported flight plan leg type (see Flight Management
Section)
Aircraft > 250 feet below active VNV Target Altitude
Current crosstrack or track angle error has exceeded limit
Active altitude-constrained waypoint can not be reached within
maximum allowed flight path angle and vertical speed
* If the flight director has been engaged to fly a VNV flight plan, the VNV Target Altitude being held remains displayed
while on level flight plan legs.
Cirrus Perspective
80
Figure 2-32 Vertical Navigation Indications (PFD)
Criteria
Table 2-2 VNV Indication Removal Criteria
by Garmin – Pilot's Guide for the SR20/SR22/SR22T
™
Top of Descent Message
VNV Indication Removed
Required Vertical Vertical
Speed (RVSI) Deviation (VDI)
X
X
X
X
X
X
VNV Target
Altitude
Vertical
Deviation
Indicator
Required
Vertical
Speed
Indicator
Terminal
Phase of
Flight
VNV Target
Altitude*
X X
X X
X X
X X
X X
X
190-00820-08 Rev. A