Page 1004
1 Dec 2003
34-45-4
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MAINTENANCE MANUAL
CAS-100 COLLISION AVOIDANCE SYSTEM
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(3) Failure Detected During Self-Test
If a failure is found during self-test, the voice message output from the TCAS processor
is, TCAS System Test Fail. The PPI Radar/TCAS display or dedicated display will show
the failed system component(s).
Possible traffic display fault annunciations are as follows:
•
TCAS PROCESSOR
• XPNDR TOP ANT
•
UPPER ANTENNA
• XPNDR LOWER ANT
•
LOWER ANTENNA
• XPNDR TCAS DATA
•
RADIO ALT No. 1
• XPNDR CONTROL DATA
•
RADIO ALT No. 2
• XPNDR CONTROL DATA
•
RADIO ALT No. 1 and No. 2
• XPNDR CONTROL DATA
•
No. 1 XPNDR DATA BUS
• No. 1 XPNDR ALT DATA
•
No. 2 XPNDR DATA BUS
• No. 2 XPNDR ALT DATA
•
TRAFFIC DISPLAY
• ATTITUDE•RA DISPLAY No. 1
•
RA DISPLAY No. 2
• HEADING
•
RA DISPLAY No. 1 and No. 2 • NO TCAS (NO DATA on some versions)
•
TCAS FAIL
(4) Test Results Not to Specification
If self test results are not to specification, do these:
(a) If PPI or dedicated display is used, check and record the fault annunciation(s). For
the Mode S transponder system and TCAS line maintenance troubleshooting
procedures, refer to Tables 1001 and 1002.
(b) Do the Mode S and TCAS processor self tests on the front of each unit to make the
problem clear in non-PPI or dedicated display aircraft.
(5) Dual Mode S Equipped Aircraft
Set the transponder selector on the CTA-81A to 2 to test transponder 2 in an aircraft with
two Mode S units. Turn the function selector to TA for 10 seconds (minimum), then do
again step 2.B.(1).