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Can You Troubleshoot #3 - CYT Why This Copter Fell Out Of The Air

3,401 views · Published 22 May 2016 · 0:15 · Indexed 22 October 2026

Channel: Joshua Bardwell · 2016 · Education

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The "CYT" series invites you to analyze an RC flight problem. After a bit, the answer, and correct analysis is posted.

Here is some information that is relevant to the problem.

1) No buzzer is installed on the copter.
2) Although I have given you blackbox overlay so you can see the sticks, please assume that blackbox logging is not available. This problem does not require blackbox for analysis.
3) The transmitter is a Taranis and the receiver is an X4R-SB. No telemetry alarms went off when the incident occurred.
4) Sometimes the copter will refuse to arm entirely. Sometimes it will fly for a few seconds and then drop out of the sky.

There is one more piece of information that I am intentionally withholding that would be a dead giveaway what the problem was. If you ask the right question, I will give you the truthful answer, but I'm not going to volunteer the information because it would make diagnosing the problem obvious to at least some of you.

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