[onewhippedpuppy]

Originally Posted by intakexhaust

Black boxes, pinging and batteries. They say the signal last 30 days.

Do we know IF THEY ACTUALLY (or properly) checked the bb on last inspection? And WHEN? Who signed off on the BB inspection? Did they check into that individuals background. I wouldn't second guess anything and every miniscule detail needs to be verified.

Are they replacement type or kept hot rechargeable?

Is the BB capable of functioning 30 days in deep cold water temps? What are the battery specs at various temp ratings?

Lastly - The False Drop... a decoy bb pinging at various locations.

If I remember correctly from my contact with them, the battery in ELTs and CVRs have an FAA mandated replacement interval, I think every 24 months. They are charged by the aircraft electrical sytem when the plane is in operation.