Air Precision ELT-96/97 - Three-frequency 121.5 ... - TRAST Inc.
Batteries must be replaced every 4 years , after any emergency use, or if they reach 50% of their useful life.
406 MHz (digital), 121.5 MHz (analog), and 243 MHz (analog). Air Precision Elt 96 Maintenance Manual
It is recommended to perform a self-test every three months to verify system integrity.
Programmable digital message (144 bits) containing country ID and aircraft registration. Critical Maintenance Procedures Air Precision ELT-96/97 - Three-frequency 121
Automatically by a crash sensor ( G-switch ) or manually via a remote control unit in the cockpit.
The unit features a built-in self-test function to verify the output power of the 406 MHz transmitter and battery capacity. 406 MHz (digital), 121
Replacement is mandatory after 48 hours of continuous use or a cumulative operating time exceeding 7 hours .
Regular maintenance is essential to ensure reliability. The manual specifies detailed inspections and tests that must be performed by qualified personnel. 1. Self-Test and Operational Checks
Press the "AUTOTEST/RESET" button on the remote control. A successful test is typically indicated by the "XMIT ALERT" light flashing for 2 seconds and then extinguishing.