Air Precision Elt 96 Maintenance Manual -

. The manual instructed him to tune a VHF receiver to 121.5 MHz to monitor the audio signal. Silence. He moved to the next logical step: Section 9: Battery Replacement . The ELT 96 is powered by Lithium Thionyl Chloride cells

Elias ignored him. He looked at the schematic in the manual. It was a roadmap. He traced the signal path with a greasy fingernail. Power came in, hit the regulator, flowed to the modulation board. Air Precision Elt 96 Maintenance Manual

Every 48 months from date of manufacture OR 1 hour of cumulative transmit time. Elias ignored him