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TM 1-1510-218-10
2-93. PILOT'S ALTIMETER
The altimeter is located on the upper left side of
the instrument panel. The altimeter is a self-contained
unit, which consists of a precision pressure altimeter
combined with an altitude encoder.
indicates, and the encoder transmits simultaneously,
pressure altitude information to the transponder.
Altitude is displayed on the altimeter by a 10,000-foot
counter, a 1,000-foot counter, and a single needle
pointer that indicates hundreds of feet on a circular
scale in 20-foot increments.
10,000 feet, a diagonal warning symbol will appear on
the 10,000-foot counter. A barometric pressure setting
knob is provided to insert the desired altimeter setting
in inches Hg or millibars.
operates inside the altimeter whenever aircraft power
is on. If dc power to the altitude encoder is lost, a
warning flag, placarded CODE OFF, will appear in the
upper left portion of the instrument face.
indicates that the altitude encoder is inoperative and
that the system is not reporting altitude to ground
stations.
Operating instructions are contained in
Chapter 3.
2-94. PILOT'S ALTIMETER
The pilot's altimeter provides a servoed counter
drum/pointer
display
pressure altitude.
The barometric pressure is set
manually with the BARO knob, and displayed in units
of inches of mercury and millibars on baro counters.
Altitude is displayed on the altimeter by a 10,000-foot
counter, a 1,000-foot counter, and a single needle
pointer that indicates hundreds of feet on a circular
scale in 20-foot increments.
10,000 feet, a diagonal warning symbol will appear on
the 10,000-foot counter. The altimeter is ac powered
and is protected through a 1-ampere circuit breaker,
placarded PILOT ALTM (AC), located on the
overhead circuit breaker panel, Figure 2-16, Sheets 1
and 2. Encoding capability is derived from the air data
computer. The pilot's altimeter acts as an encoding
repeater.
For proper encoding operation, the
2-ampere circuit breaker, placarded AIR DATA
ENCDR, located on the overhead circuit breaker panel
must be in. Operating instructions are contained in
Chapter 3.
2-95. COPILOT'S ALTIMETER.
The copilot's altimeter is located on the upper
right side of the instrument panel. The altimeter is
pneumatically operated and requires no electrical
power for operation.
altitude reporting capability.
operates inside the altimeter whenever power is on. It
is protected by a 1-ampere circuit breaker, placarded
2-118
C D1
.
The display
Below an altitude of
A dc-powered vibrator
D2 T
.
of
barometrically
corrected
Below an altitude of
The altimeter does not have
A dc-powered vibrator
COPILOT ALTM, located on the overhead circuit
breaker panel.
2-96. VERTICAL VELOCITY INDICATORS.
Vertical
separately on the pilot and copilot sides of the
instrument panel, Figure 2-17.
speed at which the aircraft ascends or descends
based on changes in atmospheric pressure.
indicator is a direct reading pressure instrument
requiring no electrical power for operation.
pilot's vertical velocity indicator is incorporated into the
TVSI TCAS II indicator.
2-97. FREE AIR TEMPERATURE GAUGE.
The
Free
mounted outboard of the pilot's seat indicates the
This
outside air temperature in degrees Celsius.
2-98. STANDBY MAGNETIC COMPASS.
Inaccurate indications on the standby
magnetic compass will occur while wind-
shield heat and/or air conditioning is being
used.
The standby magnetic compass is located below
the overhead fuel management panel to the right of
the windshield divider, Figure 2-10. It may be used in
the event of failure of the compass system or for
instrument cross check. Readings should be taken
only during level flight since errors may be introduced
by turning or acceleration. A compass correction chart
indicating deviation is located on the magnetic
compass.
2-99. MISCELLANEOUS INSTRUMENTS.
a. Annunciator Panels
annunciator panels are installed. One is a warning
panel with red fault identification lights, and the other is
a caution/advisory panel with yellow and green
identification lights.
near the center of the instrument panel below the
glareshield, Figure 2-17, Sheet 1, and the caution/
advisory panel is located on the center subpanel.
Illumination of a red warning light signifies the
existence
of
immediate corrective action.
signifies a condition other than hazardous requiring
pilot attention. A green advisory light signifies other
than hazardous requiring pilot attention.
advisory
light
Table 2-11 provides a list of causes for illumination of
velocity
indicators
They indicate the
Air
Temperature
(FAT)
WARNING
C D1
The warning panel is mounted
a
hazardous
condition
A yellow caution light
indicates
a
functional
are
installed
The
T
The
gauge,
.
Two
requiring
A green
situation.
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