Table 7 Tcas Sensitivity Level Determinations - Honeywell CAS-100 Maintenance Manual

CAS-100 COLLISION AVOIDANCE SYSTEM
Table 7 gives data related to sensitivity level determinations and Figure 3 gives data related to
the conditions for resolution and traffic advisory limits compared to sensitivity levels. This data
is used as a reference during this manual
Table 7. TCAS Sensitivity Level Determinations
Mode
Sensitivity Sensitivity level is set in automatic mode by the altitude or by the ground
Level 0 command. Sensitivity level 0 is set manually when the control unit function switch
is in the TA/RA mode position (in-flight). This selection sets all TCAS surveillance,
tracking, and resolution advisory functions.
Sensitivity TCAS stops all surveillance, tracking, and resolution advisory functions in
Level 1 sensitivity level 1. The traffic advisory display is blanked, but for a STANDBY
mode annunciation. The conditions for sensitivity level 1 are any one of the
following:
(1) CTA-100A or KFS-578A Control Unit function switch is set to TEST, STBY, ALT
OFF, or ALT ON.
(2) CTA-100A Control Unit function switch is set to ATC 1 TEST, ATC 1 STBY,
ATC 1 ON, or any ATC 2 position, or ALT SOURCE switch set to OFF
position.
(3) TCAS is in STANDBY mode or TEST mode.
(4) TCAS has failed.
Sensitivity TCAS does surveillance and tracking functions in sensitivity level 2. TCAS gives
Level 2 traffic advisories only. The conditions for sensitivity level 2 are any one of the
following:
(1) Own aircraft is in-flight and TA or TA/RA is below 1000 feet above ground level
(AGL).
(2) Own aircraft is in-flight and transponder/TCAS control unit is set to TA.
(3) Own aircraft is on the ground and transponder/TCAS control unit is set to TA or
TA/RA.
Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
MAINTENANCE MANUAL
Description
34-45-47
Page 22
1 Dec 2003