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503 series Fixed ELT

Automatic Fixed ELT

Key Features:

  • 406 MHz Cospas-Sarsat message, with GPS.
  • 121.5 and 243.5 Homing frequencies.
  • Automatic G Activation.
  • Fixed or rotary wing installations.
  • Fixed/portable options.
  • Modular construction.

Transmitter Signal

Frequency Peak Effective:

Radiated Power:

121.5MHz / 243.0MHz / 406.025 MHz

0.1W at 121.5 / 243.0MHz

5.0W at 406.025MHz

Frequency Stability:

2 x 10-9 per min

Transmission Duration:

24Hrs min, 5W PERP at -40˚C

48Hrs min, 0.1W PERP at -40˚C

Repetition Rate:

520ms (±1%) every 50 secs (±5%)

Activation:

Manual The 503 Series of ELT’s can be manually

operated via the cockpit mounted remote

switching panel.

Automatic The ELT can be reliably activated by the

multi-axis G Switch.

Dimensions:

255 x 105 x 45mm

Weight:

1.3kg

Battery Storage Life:

6 years

Approvals:

TSO C91a and C126

CAA WR01029

Cospas-Sarsat Approval No. 97

Compliance:

The 503 series of ELT’s are compliant with the following specifications:

Cospas-Sarsat specification C/ST.001

EUROCAE ED-62 / RTCA DO-204

EUROCAE ED-14C / RTCA DO-160C

CAP 208 Aircraft Radio Equipment Issue 2

January 1991 Volume 1, Part 1

Product Range

Part Number

503-1

Transmitter Only

503-4

Remote Controller

503-7

Multi-axis G Switch Module

503-17

Remote Controller with back lighting

503-19

Multi-axis G Switch Module for helicopter mounting

503-20

Remote Controller with NVG lighting

503-35

Multi-axis G Switch Module with embedded GPS

503-36 

Multi-axis G Switch Module with embedded GPS for helicopter mounting

Accessories

Part Number

10-102-19

ELT Rigid Whip Antenna – Aircraft Mounted

10-102-33

ELT Rigid Whip Antenna – Aircraft Mounted

10-118-28

ELT Blade Antenna – Aircraft Mounted

10-118-35

ELT/GPS Blade Antenna – Aircraft Mounted

10-274-1

ELT Flexible Whip Antenna – Transmitter Mounted

A0637 

Mounting Tray – Portable Installation

A0637-1

Mounting Tray – Fixed Installation

A0673-1 series

Battery for 503-1 series

Image of C130 aircraft