HR Smith Techtest 503-35-1 User Manual

MAINTENANCE MANUAL
FOR
EMERGENCY LOCATOR TRANSMITTER
TYPE 503 SERIES
Issue 17 - 11.04.18
CN 10407
HRS1013-04-02
Commercial In Condence
Techtest
Limited
Street Court
Kingsland, Leominster
Herefordshire HR6 9QA, England
Telephone: +44(0)1568 708 744
E-mail: street@hr-smith.com
Fax: +44(0)1568 708 713
www.hr-smith.com
Emergency
Location
and Rescue
Equipment

HR Smith Techtest 503-35-1 Specifications

General

Brand	HR Smith
Model	Techtest 503-35-1
Category	Transmitter
Language	English

Summary

System Description

Line Replacement Units (LRUs)

ELT 503-1

The ELT is a self-contained transmitting unit with a long-life battery, control switch, and antenna port.

G-Switch Variants

Triggers ELT transmission upon exceeding a preset G-force limit in two or three bidirectional axes.

Remote Controller Variants

Allows aircrew to test, reset, or switch the ELT ON before automatic activation.

Interface Unit Series

Passes GPS data to the ELT for positional updates on 406.025 MHz transmissions.

ELT Inhibit Facility

Inhibit Facility Function

Servicing

Battery Replacement Schedule

Troubleshooting Procedures

Diagnosing faults using built-in test, remote controller, and G-Switch test functions.

Diagnose Mode

Recharging & Conditioning G-Switch Battery Pack

Testing the Battery Pack