Honeywell International Inc. 9PGTPA-100A Manuale Utente

Pagina di 108
Page 2054
1 Dec 2003
34-45-4
7
MAINTENANCE MANUAL
CAS-100 COLLISION AVOIDANCE SYSTEM
Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
8.  Removal and Replacement
A. TPA-100A TCAS Processor
(1) Removal
(a) Loosen retaining screw clamps, found on the front of the TCAS processor mount that 
attach the TPA-100A to the mount.
(b) Carefully pull the TPA-100A forward until the unit disconnects from rear connector on 
the mounting tray and moves out of guide pins on the mount.  Remove the unit from 
the mount.
(2) Reinstall
(a) Move TPA-100A on the mount and carefully push the unit to the rear until guide pins 
are aligned and the connector is fully engaged.
(b) Engage and tighten retaining screw clamps to attach the unit tightly in position.
B. Directional Antenna
(1) Removal
(a) Remove four coaxial cables from the connectors J1-J4.
(b) Remove four or eight screws that attach the antenna to the airframe. Remove the  
antenna and the antenna O-ring.
(2) Reinstall
(a) Clean the aircraft antenna assembly surface.
(b) Install new antenna O-ring.
(c) Attach antenna to aircraft with four or eight screws.  Apply approved lock-tight 
sealant to assembly screws.
(d) Connect the four coaxial cables to related connectors J1-J4 on the antenna.
(e) Apply approved sealing silicant around the outer edge of antenna to seal antenna to 
the aircraft fuselage.
C. TA/VSI and RA/VSI
(1) Removal
(a) Loosen the clamp fasteners on the front of unit.
(b) Pull the unit forward from cockpit panel and disconnect the mating cable connector 
(and pneumatic tube, if applicable) from aft of the unit.