User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
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CAS/Part No.9005000
Table 1-22: TAWS/RWS Aural Alerts (cont)
NOTES:
1. These aural messages are not applicable for Part Numbers 9005000-10000, -
10101, -10202, -10204, -11203.
2. For Part Numbers 9005000-10000, -10101, -10202, -10204, -11203, -11801 and -
55801, the Avoid Terrain aural alert begins with a single “TERRAIN AHEAD PULL
UP” or “TOO LOW TERRAIN” or “TERRAIN, TERRAIN, PULL UP, PULL UP” then
followed by “AVOID TERRAIN” (i.e., “TERRAIN AHEAD PULL UP”, “AVOID
TERRAIN”, “AVOID TERRAIN”, etc.) when an Avoid Terrain condition exists before
a Pull-Up occurs.
(8) Operating Procedures
Basic TAWS/RWS operating procedures on the ground include pre-flight test,
TAWS/RWS activation before takeoff, and TAWS/RWS deactivation after
landing. In-flight procedures are contained in the pilot’s manual.
(a) Pre-Flight Test
● The Standard Self-Test is performed by activating either the OMS
self-test or the self-test discrete input. The Standard Self-Test can
only occur while on the ground.
● Upon activating the Standard Self-Test the following will occur:
● The Standard Self-Test will not be initiated if a TAWS alert is present
when either the OMS self-test or the self-test discrete input is
activated.
● If the T
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CAS unit has the windshear function enabled, the following
aural annunciation will occur:
“TERRAIN AWARENESS AND WINDSHEAR TEST START”
● If the T
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CAS unit does not have the windshear function enabled, the
following aural annunciation will occur:
“TERRAIN AWARENESS TEST START”.
During the Standard Self-Test the following will occur:
All discrete outputs implemented within a specific aircraft installation
will be tested for over current and output voltage levels by activating
the output for 4.0 seconds (±100 milliseconds), then deactivating the
output for 2.0 seconds (±100 milliseconds), and then re-activating
the output for 4.0 seconds (±100 milliseconds). Any faults found will
be recorded in the T
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CAS unit’s non-volatile memory.
The T
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CAS unit will verify the following functional areas in accordance
with Figure 1-36.
● Aircraft Personality Module (APM) (Not applicable to Part Numbers
9005000-10000, -10101, -10202, -10204, or -11203.)
● Terrain Database CRC
Pub. No. 8600200-001, Revision 004
34-45-29
1-103
04 Nov 2014
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