Part #: S1822502-02

Model: 406AF-H




ELT (Helicopter Installation)

Part Number :
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406 AF-H
  • Automatic fixed ELT Helicopter Version
  • 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 on board helicopters in the flat position (to gain space compared with usual installations at 45° downwards)
  • 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.


406.025 MHz:      
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       
Power Supply:      
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)       
Self Test:       
406 MHz RF Power       
Battery Voltage       
Temperature Range:       
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 Helicopter ELT Description:
S1822502-02 Kannad 406AF-H


- ELT (Helicopter Installation)
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

It depends on the make and model of the ELT. However, most 406 ELTs have a battery life of either 4 or 5 years. Most batteries can transmit for as long as 24 hours.
The Programming Dongle (P/N S1820514-06) is a portable memory module that contains the identification information for an aircraft. This dongle usually remains on board the aircraft and allows for an unprogrammed ELT to quickly be programmed with the aircraft identification information. The dongle is programmed via PC interface by an Kannad authorized distributor or shop.

The PR600 Programming Adapter (P/N 1201570) is the computer interface adapter needed to program the ELT usually on a bench type setup. Authorized Kannad programming training is required to utilize the PR600 for programming ELTs.
After February 1st, 2009, Emergency Locator Transmitters (ELTs) operating on the 121.5 and 243 MHz will not be monitored by the COSPAS-SARSAT satellite system. There are many false distress signals and searches initiated each year with ELTs. The newer 406 MHz ELTs transmit unique aircraft information allowing authorities to contact an aircraft owner before a search is initiated. Therefore, 406 MHz significantly decrease the amount of unnecessary searches.

While 121.5 MHz is the international distress signal, it has limitations in relation to the search and rescue efforts that would follow the activation of this frequency by an ELT. Accuracy to a crash site of an aircraft with a 121 MHz ELT can be up to 20 miles. With the enhanced performance of the 406 MHz ELT and programmed aircraft information, accuracy is improved to 2 miles.

After February 2009, the 121/243 distress signals will only be detected by ground based receivers such as air traffic control, local airports, or other aircraft. Therefore, the search and rescue efforts related to an aircraft with an older ELT could be limited and will take longer, especially in a remote location.

Some aircraft owners do not respond positively towards FAA mandates. The February 1st 2009 ELT date is not a deadline to comply with any sort of ELT mandate. As mentioned, this date only applies the discontinuance of 121/243 ELT monitoring by the COSPAS-SARSAT satellite system. Therefore, aircraft owners must decide what value to place on their safety and survival should they be put in an emergency situation where the ELT would be activated.
An STC is not required for most ELT installations. Usually, only a logbook entry is needed. However, you should contact your local FSDO or local aviation authority for exact clarification.
A programming dongle can be programmed with aircraft information and easily stored or transported. This dongle provides quick programming when connected to an ELT.

Some of the more common reasons and applications for a dongle are:

- Aircraft being ferried from one country to another
- Ownership transfer of an aircraft
- Aircraft tail number change

With the relatively low cost ($240 Retail) and the hazmat shipping considerations for 406 ELTs, it is much more cost effective for an owner to purchase a dongle to the owner to change their programming.

Programmed aircraft information is essential for search & rescue, should the ELT be activated. When activated, the ELT will transmit your identifier.

An Emergency Locator Transmitter (ELT) should be programmed with either the aircraft tail #, a serial #, or the aircraft operator designator. The aircraft information programmed is determined by your country's requirements. The information is sent to the government agency responsible for keeping the database of the country in which your aircraft is registered.

The ID is linked to your SAR database, containing valuable aircraft information: Type of Aircraft, Address of Owner, Telephone # of Owner, Aircraft Registration #, and Alternate Emergency Contact, etc.

Keeping this information up to date & accurate is a major concern of the Search & Rescue Centers. Without accurate information, valuable time may be lost in attempting to locate the owner of the aircraft.

Your ELT can easily be programmed by a certified repair station, such as Southeast Aerospace.

Contact Southeast Aerospace today for more information on ELT programming.
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.