They took the precaution of shutting Myfanwy in her aerie before re-testing the repaired drone. It hadn’t been badly damaged, but the bent propeller would have caused steering problems and she’d managed to knock the flight rotor off. Tosh and Ianto redesigned the mount to make it stronger.
This time, everything was going well until Jack tried using the manual controls without switching off the autopilot.
The poor drone, confused by conflicting instructions, spun around in circles for a moment, then crashed into the wall, bending the propeller again.
Despite that, Tosh declared the test successful. Sort of.
TBC in ‘Third Time Lucky’