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P I L O T T R A I N I N G G U I D E
Pitch Hold (PIT) Mode
PIT mode is automatically selected when no other vertical mode is active, and the
autopilot is engaged. Note that the lateral mode automatically engaged is the ROL
mode. If the pitch angle is greater than 20°, pitch hold mode will reduce the airplane
pitch angle to ± 20°. PIT reference is modifiable (within pitch limits), via pilot inputs
to the pitch thumb-wheel, or by TCS. The FGC will not prevent exceedances of VMO
or MMO in PIT mode.
PIT mode is annunciated in the vertical capture field on the PFD. Pitch mode is cleared
by selecting another vertical mode. PIT will flash for 5 seconds, when active.
The pitch hold mode holds a flight path angle rather than a fixed pitch angle. The
selected flight director pitch angle will change with altitude, configuration and/or
airspeed changes, while climbing, descending or in level flight.
0.88
Vertical Speed (VS) Select Mode
VS mode is used to maintain a pilot selected vertical speed reference. FGC will
generate pitch commands to align the airplane vertical rate displayed on the PFD. The
airplane vertical rate is adjustable via the pitch wheel. The pilot may select another
vertical speed reference without canceling VS mode by depressing the TCS button,
and maneuvering the airplane to another vertical speed.
Pitch Wheel
DN
VNAV
P
I
T
C
H
UP
VS
FGC will not generate commands to exceed Vmo or Mmo when in VS mode. When a
potential overspeed condition is detected, VS flight director pitch commands will be
limited to 3 knots less than Vmo or Mmo and MAX SPD annunciation is displayed on
the PFD.
2-32
LIM
ROL
AP1
PIT
ATT2
SPD
VAPP
VNAV
ADC1
220
0.85
320
MAX
Vertical Speed
300
SPD
Target Readout
6
282
280
4
260
AUTOMATIC FLIGHT CONTROL SYSTEM
300
00
23500
Touch Control
Steering
9500
2992
IN
VS 2500
AP
For Training Purposes Only
Sept 04
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