3 ms·
For the aircraft units (ELTs), it's triggered by g-forces. Almost all aircraft in the US are required to have an ELT beacon installed on-board, though many are
by tjohns 7y ago
For the aircraft units (ELTs), it's triggered by g-forces.
Almost all aircraft in the US are required to have an ELT beacon installed on-board, though many are still equipped with the old analog (121.5 MHz) technology which isn't monitored by satellite anymore.
If you want to carry a backup or want to have a modern digital beacon (406 MHz), you can certainly carry a PLB. Many pilots do, myself included. Note that these are manually activated only, no g-force sensor.
For a PLB, I recommend picking up an ACR ResQLink. They retail for about $300.
- tialaramex 7y agoEven if you have a digital ELT, make sure you know how to manually activate it and teach any frequent passengers. The automatic trigger is not reliable, it's better than nothing but survivable impacts may not trigger the beacon. PLBs tend to have pretty easy to follow instructions written right on them, but again people who'll be with you when it's needed should be told about it during safety briefing. Kids too young to learn the radio or other potentially life-saving apparatus can be shown how to use the beacon because of how simple it is.