NXT-600 Adaptor Tray

Enables quick and easily replacement of the Rockwell Collins TDR-94 and TDR-94D systems.

NXT-700 (BK MST 70B) for Business Jet and Military Aircraft

ACSS’ exclusive distributor of the NXT-700 (MST 70B) transponder for business jet and military aircraft is BendixKing. For information on purchasing product from BendixKing please use the button below.

For NXT-700 purchases for regional aircraft, please use the Request for Quote button above.

Bendixking website

Bendixking website
Highly accurate position reporting  
High-level of ADS-B Out (DO-260B) reporting requires the transmission of precise, real-time flight data information, including current aircraft position, speed and intent. The NXT-600 automatically transmits all position data via ADS-B Out to other nearby aircraft (equipped) and Air Traffic Control (ATC).
NextGen ADS-B compliant around the world  
L3Harris NXT transponders are DO-260B-compliant to meet NextGen & Standardized European Rules of the Air (SESAR) mandates requiring transmission of more precise position, speed and intent data. They also meet ICAO Level III standards for the latest functionality for the ICAO Airborne Collision Avoidance System (ACAS) II mandate and are also compliant with European Elementary and Enhanced Mode S Surveillance Downlink of Aircraft Parameters (DAPs) and ADS-B 1090ES extended squitter.

Software upgradability yields reduced maintenance costs  
The capability to perform timely onboard software loads provides operators with simplified upgrades, increased aircraft utilization and lower maintenance costs. In addition, the high reliability of the NXT-series greatly enhances the overall validity of the TCAS system reducing Mode S transponder-induced No-Fault-Found (NFF) TCAS failures.

Environmental: DO-160G
TSO/JTSO: C112d, C166b/C112c
Software: DO-178B Level B
Transponder Data Link Capability: ICAO Level 3 (COMM-A/B/C)
ADS-B Capability: 1090ES Extended Squitter per RTCA DO-260B MOPS for 1090 ADS-B Equipment
Operating Altitude: Sea level to 55,000 feet
Operating Temperature: -55 to +70 degrees C
Storage Temperature: -55 to +85 degrees C
Power: 115VAC, 400Hz or 28 VDC
Power Consumption: 40 Watts (standby), 85 Watts (maximum)
No. of Antenna Ports: 2 (diversity)


Size (inches): 3.4 (H) x 4.1 (W) x 14.01 (L)
Weight: 5.0 lb.
Mounting: ARINC 600 4 MCU Mount / MT-600 Mount
Cooling: ARINC 600 External/Internal


Controller: Low speed ARINC 429
TCAS II: High speed ARINC 429
GPS: High or low speed ARINC 429
Altimeter: ARINC 429/575 (digital air data)
Flight Identifier: Various
Maintenance Computer (Airbus & Boeing): Low speed ARINC 429
WebEDDIT: RS-232

Product support & sales
Product support 
Repair and Overhaul Administration:
Email: ACSS.phxrepair@L3Harris.com
Phone: +1 (623) 445-7030
Fax: +1 (623) 445-7002
Product Support/Customer Service:
Email: crc.acss@L3Harris.com
Phone: +1 (623) 445-7070
Fax: +1 (623) 445-7001
AOG Services:
Regional, Business Jet & Military
Administered by logistics partner AVGroup
Provides exchange and rental services of ACSS LRUs to existing ACSS customers.
Email: salesatl@avgroup.net
Phone: +1 (866) AOG-TCAS or (866) 264 8227 US callers
Phone: +1 (678) 597-2792 International callers
Fax: +1 (770) 457-8563
Find a dealer
Find a dealer
Technical publications
Current L3Harris product owners and L3Harris Authorized Repair Facilities needing to access the latest versions of our Technical Publications and Service Bulletins can register by clicking the tab below and completing the information requested.
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