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pilot or copilot to manually change the air data hold modes (IAS, ALT, VS
or MACH) to a new reference or to manoeuvre the aircraft while tracking a
selected flight path. When the TCS button is released, the servo clutches
reengage at the manually set attitude.
7. AIR DATA COMPONENTS
A. Air Data Computer
The air data computer contains all the electronics and sensors needed to
provide altitude outputs to the altitude indicator and altitude alert; air
data hold errors of vertical speed, altitude, and Mach to the flight
director computer and the stability augmentation system. The ADC also
drives the vertical speed indicator and Mach/airspeed indicator and
provides speed information for the flap overspeed and stall warning system.
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OPERATING MANUAL
B. Pilot's Altimeter
The pilot1s altimeter provides a servo-driven, counter-drum-pointer display
of barometrically corrected pressure altitude. The barometric pressure is
set manually with the BARO knob and displayed in units of inches of mercury
and millibars. A light on the bezel is provided for altitude alert warning.
C. Pilotfs Vertical Speed Indicator
The pilot's vertical speed indicator provides a servo-driven display of
vertical speed rates from 0 to +6000 feet per minute.
D. Pilot's Mach/Airspeed Indicator
The pilot's Mach/airspeed indicator provides a counter display of Mach and
servo-driven displays of airspeed and maximum operating airspeed (Vmo).
E. TAS/SAT/TAT Indicator
This indicator displays true airspeed, and static air temperature or total
air temperature as provided by the air data computer.
F. VNAV Computer/Controller
The VNAV computer/controller provides mode selection, computation, and
display for flight director VNAV mode and altitude preselect. In addition,
aural and visual outputs are provided for altitude alerting.
8. FLIGHT COMPARTMENT DISPLAYS
A. Attitude Director Indicator (Figure 3)
The ADI combines the sphere-type attitude display with computed steering
signals to direct the pilot to intercept and maintain a desired flight path.
The ADI is shown in Figure 3 (Sheet 1) and described in paragraphs (1)
through (19).
For aircraft 1021 and subs,
the ADI is shown in Figure 3 (Sheet 2) and described in paragraphs (1)
through (23), except for paragraph (9) which is not applicable.
(1) Attitude Sphere
Moves with respect to the symbolic aircraft reference to display
actual pitch and roll attitude. Pitch attitude marks are in 5-degree
increments on a blue and brown sphere.
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OPERATING MANUAL
ROLL SCALE
ATTITUDE
SPHERE
ROLL ATTITUDE
POINTER
ATTITUDE WARNING FLAG
GLIDESLOPE POINTER
GLIDESLOPE WARNING FLAG
RADIO ALTITUDE BAR
EYELID (BROWN)
ATTITUDE TEST SWITCH
EFFECTIVITY: A/C 1004 TO 1020
MODE ANNUNCIATORS
FLIGHT DIRECTOR
WARNING FLAG
SINGLE CUE PITCH AND ROLL
COMMAND BAR
SPEED COMMAND
WARNING FLAG
AIRCRAFT SYMBOL
SPEED COMMAND POINTER
EXPANDED LOCALIZER
POINTER
LOCALIZER WARNING FLAG
INCLINOMETER
RATE OF TURN
WARNING FLAG
RATE OF TURN
POINTER
Attitude Director Indicator
Figure 3 (Sheet 1)
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OPERATING MANUAL
ATTITUDE
WARNING
FLAG
ROLL ATTITUDE
POINTER
AIRCRAFT
SYMBOL
GLIDE SLOPE
WARNING FLAG
GLIDE SLOPE
POINTER
DECISION HEIGHT
DISPLAY
RADIO ALTITUDE
TEST SWITCH
ATTITUDE
TEST SWITCH
INCLINOMETER
MODE
ANNUNCIATORS
FLIGHT DIRECTOR
WARNING FLAG
PITCH AND ROLL
COMMAND CUE
SPEED COMMAND
FLAG
SPEED COMMAND
POINTER
RADIO ALTITUDE
DISPLAY
DECISION HEIGHT
SET KNOB AND
DIM CONTROL
EFFECTIVITY: A/C 1021 & SUBS
RATE OF TURN EXPANDED RATE OF LOCALIZER
WARNING FLAG LOCALIZER TURN POINTER WARNING FLAG
POINTER
Attitude Director Indicator
Figure 3 (Sheet 2)
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OPERATING MANUAL
(2) Aircraft Symbol
Serves as a stationary symbol of the aircraft. Aircraft pitch and
roll attitudes are displayed by the relationship between the fixed
aircraft symbol and the movable sphere. The aircraft symbol is flown
to align the command cue to the aircraft symbol in order to satisfy
the commands of the selected flight director mode.
(3) Roll Attitude Pointer
Displays actual roll attitude through a movable index and fixed scale
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