Super 80 Professional – AOM
FLIGHT MANAGEMENT
Section 15 Page 10
Super 80 Professional – Aircraft Operating Manual
Coolsky, 2018
Conditions resulting in VNAV
disengagement:
•
The flight crew engages another
vertical mode such as VERT SPD.
•
The armed mode becomes active,
such as G/S armed to G/S CAP.
•
A loss of data sensor required for
VNAV.
•
A loss of navigation data (position or
velocity).
•
The Autopilot and both Flight
Directors are de-selected.
•
The autothrottles are disengaged.
•
The TRP mode is changed to TO or
TO FLX.
When VNAV is disengaged, the DFGS reverts
to ALT HLD from VNAV CRZ or VNAV LVL, and
IAS HLD from VNAV CLB or VNAV DES.