Another belated find by me - this Grand Canyon rescue was 4 years ago (2020), but I just spotted the account.

While this Grand Canyon National Park rescue at Tapeats Creek, Arizona is (correctly) credited to the use of an ACR PLB,the survivor says, that, after SAR responded to his PLB:

"The search and rescue team had a hard time spotting us from the air.
I used a signal mirror and the pilot said thatís how they were able to locate us."

Full story here:

Edited by rafowell (05/26/24 05:12 AM)
A signal mirror should backup a radio distress signal, like a 406 MHz PLB (ACR PLB) (Ocean Signal PLB)