U3S

Live tracking
Transmitter photos

Like the former flights, this one also uses a special U3S firmware version.

Flight S-23 climbed to altitude but then started to lose height gradually. There was probably a balloon failure (leak) that caused gas leak and loss of lift. 

Live tracking

Transmitter photos

View the embedded image gallery online at:
http://qrp-labs.com/flights/s22.html#sigFreeId0fa5ba0f2b