503 Series ELT Tracking System

503 seriesThe Next Generation of ELT

The latest upgrade to the HR Smith 503 ELT series utilises the Iridium satellite network to provide an independent aircraft tracking and alerting function.

The addition of the Iridium service to the existing full Cospas/Sarsat coverage and transmission of last known GPS co-ordinates hugely increases the probability of accurately locating downed aircraft. The Iridium module allows for live aircraft tracking and can be programmed to activate the ELT under abnormal events.

Autonomous Tracking trigger events include:

  • Loss of aircraft power
  • Unusual altitude, attitude, speed or acceleration.
  • Diversion from geo-fence or flight path Plus many other programmable parameters 

If any of these user defined thresholds are exceeded the ELT will be activated. A Distress Tracking option is also available, which activates the ELT in the event of an imminent accident. The activation triggers for distress tracking are designed to meet EUROCAE ED237. Existing 503 series ELT customers wanting to upgrade to the Iridium functionality need only replace the G-Switch module and Antenna, due to the unique modular construction of the 503 series ELT system. The 503 series is utilised globally by all major rotary and fixed wing manufactures and operators. 

elt tracking

Brochure downloads

pdf503 Series Tracking ELT
pdf503 Series Deployable ELT 
pdf12-503-5 Programming Test Set