Picture of product CAS67A

Part #:

Model: CAS67A




TCAS II System

Part Number :

CAS-67A TCAS II System
  • Traffic Alert & Collision Avoidance System
  • Functions include: Surveillance, Tracking, Collision Avoidance Computation & Resolution Advisory
    Display, Threat Potential Evaluation, Traffic Advisory Display, Aural Alert, and Air-to-Air Coordination
  • Provides safe separation between own aircraft and other aircraft equipped with Mode S,
    C or A/C transponders
  • Monitors airspace around it's "own" aircraft by interrogating an "intruder" aircraft's transponder
  • TCAS processor computes the range, differential altitude, bearing & closure rate of the intruder, the intruder data is then compared to it's own position and the potential for collision is determined
  • Categories intruders as Resolution Advisories (RAs), Traffic Advisories (TAs), Proximity
    Advisories (PAs), or non-threats
  • Provides voice message advisory alerts on the cockpit audio system & visual displays of traffic advisories (TAs) and collision resolution advisories (RAs)
  • Air-to-Air coordination occurs when a maneuvering data link is established with the intruder aircraft via the Mode S Transponders when both aircraft are TCAS II equipped, the data link ensures that the resolution advisories in both aircraft are coordinated and compatible
  • TCAS II equipment meets the environmental conditions of RTCA DO-160B/C/D
  • The CAS-67A TCAS II Systems components include a Processor, Top & Bottom Antennas, Display, Transponder & Control Unit
  • Detailed list of CAS-67A equipment (CLICK Here to View Diagram):
    • TPU-67A TCAS II Processor and CM-67A/CM-2000 Configuration Module
    • ANT-67A (Top Antenna)
    • ANT-67A (Bottom Antenna) or
      L-band Omnidirectional Antenna
    • Dual resolution advisory displays and a traffic display required:
      (2) IVA-81A / 81C / 81D Indicators or
      IVA-81B Indicator & Radar/Traffic display via GC-362A Processor
      or KAD-480T System & EFIS-40/50 MFD via Symbol Generator
    • MST-67A Mode S Transponder
    • KFS-578A / PS-578A / PS-550 Control
      or CD-674C Control
      or CTA-81A / 81D Control
      or RMS-555 Radio Management System
  • For more information on the CAS-67A system, see individual component details


Product Page for Reference Only, Must use System Component PNs for Ordering


Part Number: Description:
CAS-67A System 1 TCAS II System 
CAS-67A System 2 TCAS II System 


CAS-67A System 1
- TCAS II System
Price Condition Status
CAS-67A System 2
- TCAS II Enhanced System
Price Condition Status

Click on a question below to see the answer. If you have a question about this model that is not answered below, please contact questions@seaerospace.com

In relation to NE (New) parts, many OEMs change their prices and availability without any notice to dealers or the industry. Therefore, through the REQUEST or RFQ indication, we ask that customers contact us for the most accurate price and availability.

In relation to SV & OH parts, the used parts aftermarket in the aviation industry is not an infinite supply. It is a dynamic, constantly changing market that is significantly affected by and susceptible to highs and lows in supply and demand. Therefore, although we attempt to, at times, we are unable to predict the exact moment when an item may be available. Once again, through the REQUEST or RFQ indication on our website, we ask that customers contact us for the most current and accurate price and availability.

Utilizing more than one antenna to improve the quality and reliability of radio signal is called antenna diversity.

Heavy and/or faster aircraft utilize top and bottom antenna configurations to eliminate the possibility of signal blind spots caused by shadowing. Lighter, slower general aviation aircraft typically only have 1 antenna and do not require antenna diversity. Although not completely uniform, the transmission pattern of a typical antenna provides adequate radiation above and below in relation to most GA aircraft even when the antenna is on the bottom of the aircraft.