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ELT / PLB (merged)

NCYankee hit it spot on.

That said, why the bad rap all of a sudden for 121.5s ?

I mean they are dead simple to use and any “rescuer” with a VHF can pick up the signal and probably even get reasonably close to finding the ELT . At least the fire crew on my home airport seem pretty good at tracking down tripped ELTs !

Last Edited by Michael at 28 Jan 18:12
FAA A&P/IA
LFPN

Michael wrote:

That said, why the bad rap all of a sudden for 121.5s ?

406 MHz signal is the only one sensed by COSPAS-SARSAT satellites; if your ELT has a built-in GPS, then the satellite will receive your coordinates right away and retransmit them to the relevant rescue authority. 121.5 MHz beacons are only good for local homing.

LKBU (near Prague), Czech Republic

When EASA mandated ELT’s should be fitted the flying club I was leasing three aircraft to acquired a PLB for each of the aircraft and the flying order book was amended to note that the PLB should be carred on all flights IAW the UK CAA derogation.

While this met the requirements of the UK law I became concerned that in the event of an accident that incapacitated the occupants or if the pilot forgot the PLB I might be seen to be not be complying with the leagal obligation of a duty of care to those flying in the aircraft.

The result of this is I fitted a GPS enabled 406 / 121.5 ELT in all my aircraft and can sleep at night safe in the knowledge that I have done all I reasonably can should one of the aircraft meet with an accident ………… I note with interest that almost to a man the UK training industry has failed to follow suit.

Ultranomad wrote:

406 MHz signal is the only one sensed by COSPAS-SARSAT satellites; if your ELT has a built-in GPS, then the satellite will receive your coordinates right away and retransmit them to the relevant rescue authority. 121.5 MHz beacons are only good for local homing

Fully aware of what 406 is about, thanks anyway.

Local homing DOES actually work in lot’s of instances and is better than nothing.

FAA A&P/IA
LFPN
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