Tier 1 ($12,500) — SOLD OUT  ·  Tier 2 ($14,500) — <10 units left  ·  Next tier: $17,500 <10 in stock
<10 units at Tier 2 — ships worldwide

ADS-B Out Compliance.
Drop-In MST-67A Replacement.

Brand-new BendixKing MST-70B Mode S transponders. FAA & EASA certified. 66% below list price.

View Pricing & Buy Request a Quote
$14,500
Tier 2 price
66%
below list
100+
in stock
FAA+EASA
certified

What is ADS-B Out?

Mandatory Surveillance for Modern Airspace

ADS-B Out (Automatic Dependent Surveillance – Broadcast) continuously broadcasts your aircraft's GPS position, altitude, speed, and identification to ATC and nearby traffic. It replaces radar as the primary surveillance technology worldwide.

Since January 2020 in the US, and progressively across EASA, ICAO, and regional authorities, ADS-B Out is mandatory for operating in controlled airspace. Non-compliant aircraft face grounding and fines.

The MST-70B is a Mode S transponder with built-in ADS-B Out 1090ES — a direct slide-in replacement for the legacy MST-67A, adding full compliance without rewiring or panel modifications.

1090ES Protocol
DO-260B compliant. Global standard for Mode S ADS-B Out.
ELS + EHS
Elementary and Enhanced Surveillance. Full EASA CS-ACNS compliance.
FAA + EASA Certified
TSO-C112d, TSO-C166b. Validated STC for Part 23 and Part 25.
Drop-In Replacement
Same ARINC 404A tray, same connectors as MST-67A. No panel mods.

Why Buy Now

Three Reasons to Act Today

01

MST-67A Broken? Replace It.

Honeywell list price for MST-67A repair is $16,270 — more than a brand-new MST-70B. Lead time is 4–8 weeks, and you still won't have ADS-B Out. The MST-70B drops into the same tray, same connectors — brand new with full compliance.

Repair $16,270→$14,500 new
02

ADS-B Mandates Are Enforced

Non-compliance grounds your aircraft. Mandates active worldwide:

  • USA14 CFR 91.225 — Class A/B/C/E. Since 2020.
  • EASAIR 2020/587 — IFR >5,700 kg / >250 kt.
  • CanadaCAR 605.38 — Class A/B/C. Since 2026.
  • BrazilFL245+, all IFR by 2030. DECEA.
  • MexicoAll IFR since 2022.
  • ColombiaAll flights / all altitudes.
  • AustraliaFL290+ and Class A/C/E.
  • IndiaAll turbine aircraft. Active.
  • UAE, Indonesia, SG…Active. Region rules apply.
03

Price Goes Up as Stock Depletes

We acquired a limited stock at exceptional terms. Pricing is tiered — once a tier sells out, the price moves up permanently. Tier 1 is already gone.

TierPrice / unitUnitsStatus
Tier 1$12,50010Sold out
Tier 2$14,500<10Current — almost gone
Tier 3$17,50050+Next

BendixKing list price: $42,153. Even Tier 3 is 58% below list.

Repair vs. Replace

MST-67A Failed?
Replace — Don't Waste $16K+

Honeywell MST-67A repair list price: $16,270. Exchange: $21,151. New unit: $78,304 with delivery in November 2028. Even after repair, your aircraft still won't be ADS-B Out compliant.

For $14,500, get a brand-new MST-70B — same tray, same connectors, ADS-B Out included. Ships in days, not years.

Save time, save money, gain compliance in one step.

Buy MST-70B Now — $14,500 Request Quote
Hawker 800XP cockpit with BendixKing MST-67A transponder
MST-67A (Honeywell list)MST-70B (our price)
Repair$16,270$14,500
brand new
Exchange$21,151
New unit$78,304
Delivery4–8 weeks (repair) / Nov 2028 (new)Ships immediately
ADS-B Out✗ Not included✓ Full DO-260B
WarrantyLimited repair warrantyNew unit warranty
InstallationSame traySame tray & connectors
Future-proofEnd of lifeELS, EHS, ADS-B v2

ADS-B Out Pricing

Choose Your Configuration

All units are new production. Worldwide shipping included. STC right-to-use letter available ($2,500/aircraft).
Tier 2 pricing — fewer than 10 units remaining. Tier 1 at $12,500 — sold out.

MST-70B
Single Transponder
MST-67A drop-in replacement. Same tray, same connectors. Full ADS-B Out 1090ES.
List: $42,153
$14,500
↓ Save $27,653 (66%)
Buy Now Request Quote
MST-70B-DUAL
Dual Transponder
2× MST-70B for dual redundancy. Required for certain operations and airspace classes.
List: $84,306
$27,500
↓ Save $56,806 (67%)
Buy Now Request Quote
MST-70B-ADSB-KIT
Complete ADS-B Kit
2× MST-70B + NXG-900 WAAS GPS. Full ADS-B Out compliance in one package.
List: $94,201
$35,000
↓ Save $59,201 (63%)
Buy Now Request Quote
NXG-900
WAAS GPS Source
Standalone NXG-900 GPS. TSO-C145c/C154c. WAAS, EGNOS, GAGAN, MSAS globally.
List: $9,895
$7,900
↓ Save $1,995 (20%)
Buy Now Request Quote

Fleet Order (3+ aircraft)?

Volume pricing available. 100+ units in stock for immediate delivery.

Get Volume Quote

Tier 2 pricing. Prices in USD, excluding VAT. EU buyers: applicable VAT added at checkout. STC right-to-use letter ($2,500/aircraft) available — we handle the paperwork for you.

Specifications

Technical Details

In Stock BendixKing MST-70B Mode S Transponder and NXG-900 WAAS GPS NXG-900 WAAS GPS (left)  ·  MST-70B Mode S Transponder (right)

MST-70B Transponder P/N 9007000-57001

Dimensions12.62 × 2.25 × 7.62 in
Weight2.5 kg (5.5 lbs)
MountingARINC 404A 1/4 ATR Short
Power+18–30.3V DC, 55W max
Breaker5A at 27.5V DC
CoolingInternal fan
Altitude0–55,000 ft
Temperature−55 to +70 °C
Antennas2 ports (diversity)
Protocol1090ES DO-260B, ICAO Lvl 3
SurveillanceELS, EHS, DAPs
TSO-C112dTSO-C166bDO-260BDO-160GEASA CS-ACNS

NXG-900 WAAS GPS P/N 9009000-55000

Dimensions2.29 × 4.78 × 6.50 in
Weight1.6 lbs
Power28V DC, 11.5W max
CoolingPassive
Altitude0–55,000 ft
Temperature−55 to +70 °C
SBASWAAS, EGNOS, GAGAN, MSAS
ADS-B In978 MHz UAT FIS-B (US only, ≤FL240)
OutputARINC 743A
TSO-C145cTSO-C154cTSO-C157aDO-229DDO-160G

Compatible Equipment

Approved Interfaces

Pre-approved under AML STC SA02677LA (Part 23) and ST02609LA (Part 25). Additional equipment verifiable via STC Appendix A.

Control Panels

  • BendixKing KFS-578A
  • Honeywell CD 671C
  • CTA-81, CTA-100A
  • PS-550, PS-578A
  • Gables G7534, G7614, G7491
  • Universal RCU
ARINC 429 label 016

Any panel providing ARINC 429 label 016 (Transponder Control) can be verified via STC Appendix A.

Air Data Computers (EHS)

  • Honeywell KDC-481T
  • Honeywell AZ-810, AZ-850, AZ-252
  • Honeywell AM-250
  • IS&S Air Data Display Units
ARINC 429 labels 203–236

Required for Enhanced Surveillance (EASA, MTOW >5,700 kg / >250 kt). ADC must output barometric altitude label 203. Not required in USA or most non-EASA regions. Need custom integration?

GPS Position Sources

  • BendixKing NXG-900 (recommended)
  • FreeFlight 1203C
  • Honeywell NZ-2000
  • Universal UNS-1Ew/Fw/Lw
TSO-C145 / C146 WAAS

GPS source must be TSO-C145/C146 WAAS-capable per DO-229D. Output via ARINC 429 or ARINC 743A.

TCAS II Systems

  • ACSS TCAS 2000
  • Honeywell CAS-67A/B
  • TPA-81A, TPA-100B/C
  • Collins TTR-920/921/2100
ARINC 429 High Speed

Any TCAS II with ARINC 429 HS input can be verified via STC Appendix A. Unlisted system?

Works alongside Garmin, Collins, or Universal cockpits. MST-70B operates independently using its own dedicated control panel and NXG-900 GPS — no rewiring of existing avionics required. For EHS (EASA), the aircraft's original ARINC 429 ADC is used. In the USA and most non-EASA regions, EHS is not required. Need custom STC for your cockpit configuration?

Approved Aircraft

Compatible Aircraft & Helicopters

AML STC validated by FAA, EASA, Transport Canada, and ANAC Brazil.

Bombardier
CL-600 / CL-601 / CL-604
Bombardier
DHC-7, DHC-8-100/200/300
Learjet
25 (all) / 31 / 31A
Learjet
35 / 35A / 36 / 36A / 55
Cessna / Textron
Citation 550 / S550 / 560 / 560XL / 650
Dassault
Falcon 10 / 20 (all) / 200
Dassault
Falcon 50 / 900 / 900EX
Gulfstream
G-II / G-IIB / G-III / G-IV
Fokker
F27 (all marks) / F28
Hawker / BAe
HS 125-400A/600/700/800, HS 748
IAI
1124 / 1124A / 1125 Astra
Saab / Convair
Saab 340A, Convair 440, DC-9-15
Aircraft Industries
L 410 UVP-E20 / Cargo / NG
BAe
Jetstream 3101 / 3201
M7 Aerospace
SA226 / SA227 (all, incl. C-26)
Pilatus
PC-12 / 12-45 / 12-47 / 12-47E
Dornier / RUAG
228-100 / 200 / 201 / 202 / 212
Cessna / Textron
Citation 525 / 525A / 525B / 525C
Beechcraft
King Air 200 / B200 / B200GT / B300C
Beechcraft
King Air 1900C / 1900D

Helicopters with documented MST-67A installations — direct MST-70B upgrade candidates. Custom STC required per aircraft S/N.

Mil / Russian Helicopters
Mi-8 / Mi-17 / Mi-8MTV
Airbus Helicopters
AS332 Super Puma / L / L1 / L2
Airbus Helicopters
EC135 / EC135P2 / EC135T2 / EC145
Bell
412 / 412EP
Sikorsky
S-76 (all variants)

These helicopters have documented MST-67A installations — MST-70B is a drop-in replacement using the same tray and connectors. Custom STC developed per aircraft S/N. Additional rotorcraft types available on request — request a custom STC evaluation →

STC right-to-use letter: $2,500/aircraft S/N. Validated: FAA, EASA, TCCA, ANAC Brazil.

Custom STC

Your Aircraft Not Listed? No Problem.

We develop custom Supplemental Type Certificates for new aircraft types — including helicopters and special missions platforms. Contact us with your model and we'll evaluate feasibility and timeline.

Installers can also use the FAA Policy Memo (March 2, 2016) as an alternative approval path for previously approved ADS-B transponder/GPS pairings.

EASA DOA and FAA DER capabilities. STC experience across Part 23, Part 25, and Part 27/29.

Request STC Evaluation

UAS / Drones

Mode S + ADS-B Out for BVLOS Operations

Fixed-wing MALE drone in flight — ADS-B Out equipped for BVLOS operations

The MST-70B is TSO-C112d/C166b certified — the same standard required for manned aircraft. For UAS/RPAS operations above 50 kg MTOW, it provides full ADS-B Out 1090ES compliance for airspace integration worldwide.

FAA Part 108 ready. Full ELS + EHS capability for international airspace integration. Proven BendixKing reliability in demanding environments.

Target: MALE/tactical drones, cargo UAS, eVTOL prototypes, maritime patrol, ISR platforms.

Request Drone Quote
Weight
2.5 kg — minimal payload impact
Power
28V DC, 55W maximum
Antennas
2× diversity ports
Altitude
0–55,000 ft operational
Certification
TSO-C112d, C166b, DO-260B, ICAO Level 3

Documentation

Technical Documentation

Product brochures available immediately. Technical documents sent to your email upon request.

Free Download
MST-70B Product Brochure
Product overview, specifications, compatible aircraft, pricing info.
Download PDF
Free Download
NXG-900 GPS Brochure
WAAS/SBAS GPS specs, FIS-B capabilities, certifications.
Download PDF
Email Required
STC Certificate & AML
AML STC ST02632LA / SA02677LA. Full approved aircraft list.
Request Free Copy
Email Required
Flight Manual Supplement
FAA and EASA approved AFMS for MST-70B.
Request Free Copy
Email Required
Installation Manual
Full STC installation manual (8009629-100) for certified installers.
Request Free Copy
Email Required
Maintenance Manual / ICA
Instructions for Continued Airworthiness. Equipment list (IEL).
Request Free Copy

Professional Installation Available

EASA Part-145 certified facility — Kunovice, Czech Republic. RVSM re-certification available.

EASA Part-145: CZ.145.0094  ·  FAA Repair Station: 5R2Y718D

Get Installation Quote
18
Years in Aviation
8,900+
Parts Shipped 24–25
EASA
Part-145
FAA
Repair Station
BK
Auth. Dealer
OEM Partners & Manufacturers

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polak@airteam.eu · +420 721 420 000

FAQ

Frequently Asked Questions

ADS-B Out (Automatic Dependent Surveillance – Broadcast) broadcasts your aircraft position, altitude, and speed via 1090 MHz. It is mandatory in FAA airspace (since 2020), and progressively required worldwide by EASA, ICAO, ANAC, and regional authorities. Without ADS-B Out, your aircraft cannot operate in controlled airspace.

Yes. All MST-70B units are new production in original manufacturer packaging. They include spare coverage. No used, overhauled, or refurbished stock.

Replace. Honeywell repair list price is $16,270 — more than a new MST-70B at $14,500. Exchange is $21,151. Repair takes 4–8 weeks and still leaves you without ADS-B Out. MST-70B is brand new, same tray, ships immediately with full ADS-B Out.

BendixKing list price (2024) is $42,153 per unit. We acquired limited stock at exceptional terms and offer tiered pricing: Tier 1 ($12,500, 10 units) is sold out. Tier 2 at $14,500 (66% below list) has fewer than 10 units left. Once Tier 2 sells out, price moves to $17,500 (Tier 3, 50+ units). Even Tier 3 is 58% below list.

Yes. An AML STC right-to-use letter is $2,500 per aircraft S/N. Covers FAA, EASA, TCCA, ANAC Brazil. We handle the complete STC paperwork for you.

Yes. ADS-B Out requires TSO-C145/C146 WAAS GPS. NXG-900 is recommended and included in our bundle. Existing compatible GPS (FreeFlight, NZ-2000, UNS-1) may also work.

MST-70B is a drop-in MST-67A replacement — same tray, connectors, wiring. Typically under 20 hours vs. 80+ for non-BK solutions.

Yes. MST-70B operates independently alongside your Garmin stack using its own control panel and NXG-900 GPS. No GTN rewiring needed. For EHS (EASA), the original ARINC 429 ADC is used. In USA/most regions, EHS is not required.

Yes. EASA CS-ACNS compliant, STC is EASA validated. Supports ELS, EHS, and ADS-B Out 1090ES — all EASA Mode S requirements.

Worldwide shipping included. Ships within 3–5 business days from Czech Republic. 100+ units in stock.

Prices exclude VAT. EU end users: applicable VAT added at checkout. Non-EU: no VAT on export.