Part #:

Model: KT-70

BendixKing - Mode S Transponder
Part Number :
Bendix Logo

  • Digital Panel Mounted Transponder with Mode A/C and Mode S (Select) capability
  • Does not meet ADS-B requirements
  • Solid State
  • 4 knobs for code selection
  • Suitable for altitudes up to 50000 feet
  • Pilot-programmable easy-to-read, gas discharge display includes adjustments for dimming time and brightness levels
  • Display shows selected code and encoded altitude
  • Mode annunciator and reply indicator
  • Pushbutton VFR code
  • Remote-Ident switching
  • Self-test capability
  • Similar to KT-71 but DOES include Mode S (Select) capability
  • TSO'd
  • Available with classic Silver Crown faceplate or Silver Crown Plus faceplate with backlit nomenclature (see table below)
  • Available in CNI5000 version for aircraft with integrated faceplate panel (see table below)
* NOTE: The KT-70 does not meet the ICAO Annex 10 SARPS mandate for Mode S datalink


Size: 6.25"W x 1.63"H x 10.0"L Weight: 3.90 lbs.
TSO: C112, DO-181, DO-178A, DO-160B: Temperature: -20 to +55C
Altitude: 50000 feet Display: Digital, Gas Discharged
Power Requirements: 11-33VDC, 35 W max Output Power: 200 watts peak pulse, minimum
Part NumberDigital Mode S Transponder Description
066-01141-0101 Silver Crown version
066-01141-0201 Silver Crown Plus version
066-01141-1101 Exclusively for the CNI-5000 radio package, no faceplate


- Mode S Transponder (SC Plus)

NSN: 5841-01-512-6173

Price Condition Delivery
$5,895.00 NEW OUTRIGHT

SEA Repair Capabilities: Yes

- Mode S Transponder

NSN: 5895-01-422-8159

Price Condition Delivery
$5,850.00 NEW OUTRIGHT

SEA Repair Capabilities: Yes

- FAA Modified Mode S Transponder

NSN: 5840-01-628-7981

Price Condition Delivery

SEA Repair Capabilities: No

- FAA Modified Mode S Transponder

NSN: 5840-01-628-7981

Price Condition Delivery

SEA Repair Capabilities: No

- Mode S Transponder (CNI5000)
Price Condition Delivery

SEA Repair Capabilities: Yes

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

The CNI5000 is a system primarily used in the Cessna Citation Jet (CJ). This system utilized a main panel faceplate assembly for all communication, navigation, and transponder units. The radios (w/o bezels) install from the rear of the assembly. Therefore, CNI5000 versions of the Silver Crown product line (i.e. KN-53 -04, KT-70 -1101, KT-71 -6101, KY-196A -50, KY-196B -0201) do not have a bezel so that the radios can be installed in a stand alone installation. Furthermore, the CNI5000 radios have 5 volt lighting.

Click here to view the CNI5000 panel. (78KB image)
Click here to view a cockpit containing the CNI5000. (162KB image)

Southeast Aerospace exchanges are based on the return of an undamaged, economically repairable core unit with identical part number as the unit shipped to the customer. An "economically repairable" core is defined as one where the cost to repair/overhaul (or Repair Cap) does not exceed 80% of the original SV/OH exchange price billed. Should the Repair Cap exceed 80%, the customer will be billed the additional amount. In the event this amount exceeds the Outright Price for the unit, the customer would only be billed the difference between the Outright Price and SV/OH Exchange Price with the core returned as-is to the customer.

Here is an example of such a transaction:

$1000 Exchange Price charged to customer
$1000 x .8 = $800 Maximum Allowable core repair charge or Repair Cap

$2000 Cost to repair core unit
- $800 Less Core repair cap
$1200 Additional billing amount.

2200.00 Total Cost of transaction

Please Note:
SEA offers exchange on new items as well. However, repair cap as indicated above is still based on SV/OH exchange price.

Upon receiving the KT-70 from Southeast Aerospace, you should note that the back two connectors on the unit are sealed with ESD (Electrostatic Discharge) tape. See the image below for example.

In order for the unit to work properly, both pieces of ESD tape need to be removed before use. The tape could cause the microprocessor to short out.

Even if you are not using the external EEPROM board kit, which connects to the smaller connector on the right side of the unit, the tape still needs to be removed.

Negotiating the exchange price of a unit only limits the allowable repair cap for the core unit. Southeast Aerospace's exchange transactions are based on the return of economically repairable core unit. Once the core is received and evaluated, the core repair cost incurred by SEA cannot exceed 80% of the original exchange price. That is, it cannot cost SEA more than 80% of the original OH/SV exchange price collected from the customer. Therefore, when and if an SEA exchange price is discounted, there is a risk that additional charges may be assessed once the core is returned and evaluated.

For more information, please refer to these other Exchange FAQs

The Mode S aircraft identification code is listed on AC Form 8050-3, Certificate of Aircraft Registration, as the International Civil Aviation Organization (ICAO) Aircraft Address Code. If the aircraft registration does not contain this information, aircraft owners with a Mode S transponder can obtain an aircraft identification code from the FAA Aircraft Registry in Oklahoma City, Oklahoma. This may be accomplished by writing to the following FAA address:

Federal Aviation Administration
Aircraft Registration Branch AFS-750
P.O. Box 25504
Oklahoma City, OK 73125-0504

You may also call: