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Part #: S1821502-02

Model: 406AF




ELT Transmitter

Part Number :

406 AF
  • Automatic fixed ELT three frequency transmitter
  • COSPAS-SARSAT system with 406 MHz frequency
  • Global Coverage - multiple satellite constellation
  • Precise pinpointing (<1NM)
  • Identification of the aircraft in distress
  • Efficient process of false alarms
  • Designed to be installed near the tail and to be connected to an outside antenna
  • Shock sensor will automatically activate the ELT in the event of a crash
  • Ideal for general aviation, small & light weight
  • Velcro fixture for easy mounting & programming by dongle (optional)
  • Versatility of programming protocols: tail code, a serial number or the aircraft operator designator
  • Remote control panel (an option) located in the cockpit allows manual activation and the self test of various operating parameters 
  • Buzzer & Indicator for activation warning
  • Navigation Interface (option) can be added to download aircraft position in the ELT
  • Maintenance is limited to a monthly self-test
  • 6 Year Battery Life
  • Qualified in Europe with JTSO-2C91a & JTSO-C126 in compliance with EUROCAE ED62 standard and by FAA with TSO-C91a and TSO-C126

In order to ship hazardous materials (HAZMAT) the shipper must have HAZMAT certified personnel. SEA will provide HAZMAT paperwork along with proper packaging and labeling for shipments directly to our customers.  If the shipment must be sent to another location such as a freight forwarder, SEA will provide the HAZMAT paperwork to the original ship to address only. Please contact your freight forwarder prior to ordering to verify that they are HAZMAT certified.  SEA is not responsible for issues that arise if your freight forwarder does not have HAZMAT qualified personnel.



5W (37 ± 2dBm)
Modulation 16K0G1D (bi-phase L encoding) with aircraft identification code
Distress Message Every 50 Sec

121.5 MHz and 243 MHz:

100mW min (+20dBm) 
Modulation 3K20A3X 
Audio Sweep From 1420 Hz to 490 Hz 
Continuous Transmission 


Solid Cathode Lithium Battery Pack (LiMn02) 
Battery Replacement Every 6 Years 


Aircraft nationality and registration marking 
Aircraft operator designator and ELT serial number up to 4096
Aircraft ICAO 24 bit address 
Serial Number 
Pin programming connector an option 


Automatically by an integrated shock sensor 
Remotely (remote control panel in the cockpit, an option) 


406 MHz RF Power 
Battery Voltage 


Operating:  -20°C to +55°C Storage:  -55°C to +85°C


ARM/OFF/ON switch, Bright red LED, BNC antenna connector, DIN 12 remote control connector


Material:  Molded Plastic  Color:  Yellow (color compounded) 
Transmitter Dimensions:  6.77" x 3.22" x 3.22" Overall Dimensions Max:  7.12" x 3.93" x 3.74"
Weight:  typical: 2.44 lbs max: 2.60 lbs    
Part NumberFixed ELT Description:
S1821502-02 Kannad 406AF



- ELT Transmitter
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

COSPAS is an acronym for the Russian words "Cosmicheskaya Sistema Poiska Avariynyh Sudov" . These Russian words translate to "Space System for the Search of Vessels in Distress".
SARSAT is an acronym for "Search And Rescue Satellite-Aided Tracking". The SARSAT system was developed as a joint effort by the USA, Canada, and France.
Click here to view the ELT reference guide.
Click here to view the guidelines.

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.