BendixKing MST 70B ADS-B Out Transponder



BendixKing MST 70B ADS-B transponder provides the simplest upgrade path for business aircraft owners, who currently own the MST 67A Mode S transponder, to add an ADS-B compliant transponder meeting the mandates for ADS-B Out.

This ADS-B Out transponder uses the same form factor as the MST 67A allowing for a simple retrofit replacement; the MST 70B uses the same mounting rack and connectors.

Estimated delivery: July 18th - July 23rd
Part Number: 9007000-57001 Categories: ,

BendixKing MST 70B ADS-B Out Transponder Features

  • Compatible form factor with the MST 67A
  • ADS-B OUT certified for installation with Bendixking TCAS II systems and most popular aircraft
  • Simple retrofit install by using the same mounting rack and connector as the MST 67A
  • Meets global ADS-B OUT mandate requirements
  • Lightweight and low power consumption

MST 78B – Cost-Effective Solution & Lowest Downtime

As a slide-in replacement for your MST 67A, no time is spent cutting your panel or mounting rack, replacing mounting trays, or installing a new wiring harness. Your aircraft may be ADS-B compliant in less than 20 hours of service compared to 80 hours for alternative vendors’ solutions.


Additional information

Weight 5.5 lbs
Dimensions 12.62 × 2.25 × 7.62 in

TSO C112d, C166b, C112d

Operation Voltage

18 VDC – 30.3 VDC (nominal)
Receive mode: 1A (nominal) @ 27.5 VDC


Transmit mode: 2A (nominal) @ 27.5 VDC

Power Consumption

Standby mode: 28 watts @ 27.5 VDC (nominal), no replies
Active mode: 55 watts @27.5 VDC, (maximum load)
External circuit breaker rating: 5A @ 27.5 VDC

Cooling Requirements

Installed Fan

Tray Connector

ARINC 404A 2 Ganged Connector w/ Signal Pins (DSX2H24S35X0001) or BendixKing Part Number 030- 03106-0000 ARINC 404A, Type DPX2MA, connector hood


B/E Aerospace part number MT4-1000S (or MT4-1001S) or BendixKing Part Number 047-09406-0014


ARINC 404A, 1/4 ATR Short

ADS-B Consumption

1090ES Extended Squitter per RTCA DO-260B MOPS for 1090 ADS-B Equipment

Number of antenna ports

2 (diversity)



MST 70B ADS-B Out Transponder

BendixKing MST 70B ADS-B Out Transponder


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