PRIMUS
r
1000 Integrated Avionics System
A28--1146--112--00
Modes of Operation
8-32
Direction
Altitude
Preprogrammed
Values
Descend
All altitudes
--2000 fpm
0--10,000 feet
240 knots
10,000 feet to
12,000 feet
240 knots to 270
knots linearly
Climb
12,000 feet to
17,377 feet
270 knots
17,377 feet to
37,000 feet
0.56 Mach
Flight Level Change Descend and Climb Parameters
Table 8--8
When the FLC button is pushed, the SPD or V/S modes are not
available. In CLB, the SPD hold mode control laws are used. In DES,
the VS hold control laws are used. When the TCS button is pushed and
held, the pitch and roll autopilot servos are disengaged and the pilot can
maneuver the aircraft. When the TCS button is released, the FGS
returns the aircraft to the preset FLC target.
In FLC, all armed pitch flight director modes are allowed, but if any
armed pitch mode is captured, the FLC mode is overridden.
NOTE:
During an FLC descent, the normally available airspeed/Mach
reference bug and digital display are removed.
The FLC mode is cancelled by any one of the following actions or event:
D
Pushing the FLC button on the GC
D
Selecting any other vertical mode on, or captured
D
Switching to SG reversionary mode
D
Selecting go--around
D
Coupling to cross--side FD
D
Coupled side MADC or AHRU goes invalid.
ALTITUDE PRESELECT (ASEL) MODE
The ASEL mode is used in conjunction with another vertical mode to
automatically capture, level off, and hold the altitude that was set with
the ASEL knob on the GC. The altitude preselect mode captures and
