Vnav Operation In Flight - Honeywell FMZ Series Pilot's Manual

Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
— Canceling VGP Mode: VGP mode is canceled by the crew
using any of the following methods.
Selection of PFD, STBY, APP, HDG, NAV, ALT, ALTA, RHT,
D
TD/H, MOT, WTR, or VS buttons on the guidance panel.
Selection of a RESUME button (when flying a HOLDING
D
pattern).
VGP mode is automatically canceled when any of the VGP arming
conditions (Arming of VGP Mode section) is no longer true. In this
case, the aircraft transitions to flight path angle (FPA).
The VGP UNAVAILABLE message is displayed when the guidance
panel approach button is pushed and the arming criteria previously
mentioned is not met.
The message is self--clearing when the FAF is sequenced.

VNAV Operation in Flight

Climb -- All VNAV climb guidance is provided using VFLCH.
D
Intermediate level offs are entered as waypoint constraints through
the MCDU or are set with the altitude preselector. VNAV never flies
through the altitude preselector in any VNAV mode.
When an intermediate level off is required due to an FMS waypoint
altitude constraint, VNAV provides guidance to resume the climb
after passing the waypoint when the selector is set above the current
aircraft altitude. When the selector is not set above the current
altitude, VNAV maintains the intermediate altitude when passing the
waypoint. In this case, the climb is resumed by setting the altitude
preselector higher and pushing IAS on the guidance panel.
Cruise -- The initial cruise altitude is entered during performance
D
initialization. When the altitude preselector is set higher than the
entered initial cruise altitude, the cruise altitude is adjusted to match
the altitude preselector. When the aircraft levels off at the cruise
altitude (initial cruise altitude or higher when set on the selector), the
FMS enters the cruise phase of flight. The speed command is
adjusted to the cruise values.
A28- - 1146- - 181
REV 4 Aug 2010
Honeywell International Inc. Do not copy without express permission of Honeywell.
Flight Plan
7-27