Part #:

Model: 406AF-Compact




ELT System w/o Antenna

Part Number :

406 AF-Compact
  • Certified for Use in the USA
  • Emergency Locator Transmitter Pack - Fixed Automatic ELT
  • Complete with Universal Mounting Rack, RC200 Remote Switch, connectors & Install Manual
  • COSPAS-SARSAT system with 406 MHz frequency
  • Dimensions: 5.1" x 3.4" x 2.9"
  • Weight: 1.87 lbs
  • Designed for private pilots & all light aircraft requiring a very compact automatic fixed ELT
  • Shock sensor will automatically activate the ELT in the event of a crash, the pilot can also activate the ELT in case of emergency
  • Velcro fixture for easy mounting & programming by dongle (optional)
  • Versatility of programming protocols: tail code, 24 bit address, serialized number, aircraft operator designator
  • Buzzer & Indicator for activation warning
  • Maintenance is limited to a monthly self-test performed from the cockpit or the ELT
  • 6 Year Battery Life
  • Now 2-Wire Compatible: 406AF-Compact ELT transmitter (PN: S1840501-01) with Amendment M or Higher is 2-Wire Compatible

Kannad 406AF-Compact Pack (PN: S1840501-02) is now 2-Wire Compatible Pack Includes: Transmitter w/Amendment M or Higher, Universal Mounting Bracket, RC200* Remote Control Panel & DIN-12 Connector *IMPORTANT: 2-Wire RC102 RCP (PN: S1820513-21) is NOT included in the pack, but available to order separately.

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.

Type:  ELT Automatic Fixed, COSPAS-SARSAT Category II (-20°C to +55°C)  


Frequency: 406.028 MHz ± 1 kHz Output Power: 5W (37 ± 2 dBm)
Modulation Type: 16K0G1D (Biphase L encoding) Transmission Duration: 440ms (short message) every 50 sec
Autonomy:  Over 48 hours at -20°C     


Frequencies:  121.5 MHz ± 3 kHz  Output Power:  100 to 400 mW (20dBm to 26 dBm) for each frequency 
Modulation Type:  3K20A3X  Modulation Rate:  >85% 
Frequency of Modulation Signal:  1420 Hz to 490 Hz with decreasing sweep  Autonomy:  Over 48 hours at -20°C 
Controls:  ARM/OFF/ON switch, Bright red LED, BNC antenna connector, Internal Buzzer, ARM/OFF/ON switch, Bright red LED, BNC antenna connector, Internal Buzzer,     
G-Switch Sensor: Mechanical G-switch sensor compliant w/EUROCAE ED62 specifications  Battery:  KIT BAT200, P/N: S18405010-01 LiMn02 2-element battery for transmitter power supply Replacement every 6 years 


Material:  Molded Plastic  Color:  Yellow (color compounded) 
Dimensions:  Installed w/mounting bracket Max: 5.51" x 3.85" x 3.14"  Weight Including Batteries:  typical 1.873 lb, max 1.929 lb 
Tightness:  O-rings     
Environmental  Conditions:  RTCA DO-160E/EUROCAE Section 4 to 24: [D1]*A*[YLMC]AYXXXXZXXX[ZC]XB Compliant w/section 25  Qualifications:  ETSO-2C91a & ETSO-2C126 (EUROCAE ED62) TSO-C91a & TSO-C126 (RTCA DO183 & DO204) 
Part Number 406AF-Compact ELT Description:
S1840501-02 Pack, Includes: Transmitter, Bracket, Remote Control Panel & Connector
S1840501-03 Transmitter Only



- ELT (Transmitter Only)
Price Condition Status
- ELT System w/o Antenna
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

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.
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.

Both Artex ME406 and Kannad 406AF-Compact include mounting rack provisions for upgrading from the Narco ELT10. Kannad offers a 2-wire switch option (RC-102) as an easy upgrade from the Narco ELT10.
As of April 2012, Artex has not released a similar switch. Please Note, the existing 121 MHz ELT must be replaced by a 406 MHz model.

For complete details including pricing, contact an SEA sales associate today.

Kannad P/N S1840502-02 allows the 406AF-Compact ELT to be used in existing ELT racks with no new drilling required. 2009 List Price is $67.00
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.
The six digit COSPAS-SARSAT ELT number is the only unique number that is located on BOTH the transmitter assembly and Kannad documents that accompany the 406AF-Compact units. For example, the 406AF-Compact System P/N S1840501-02 has a Kit serial number and then an actual transmitter serial number that differ. Therefore, the COSPAS-SARSAT number provides an easy match for the assembly and paperwork since that number is the same on both.
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.