Well Yesterday, (wednesday our time), I went to the field as usual and had a rather uneventful day but as is the usual case I do watch others fly their planes as well. My thing I did was to see a new, (Huge), Radian nose dive at full power into the ground vertically.
Whilst that in itself is not unusual the cause was! The unfortunate chap had a new and expensive setup and was using a new Spectrum DX?? and he was flying better than usual, (a pilot in training), when the Transmitter just cut out completely and without warning.
Later it was noted that the transmitter battery was dead flat. He swore that he had charged it the night previous and it had performed flawlessly for a previous number of flights the same morning. Upon examination the battery was not just flat but totally open circuit!
The 2S battery inside the battery pack had obviously had a failure possible even a failure in the inter-cell connection in the battery pack.
How do you predict this type of failure?
Have fun!