An anonymous reader shares a report on Quartz: The DJI Spark, the smallest and most affordable consumer drone that the Chinese manufacturer has released, seems to be having flight problems that could have dangerous side-effects. On DJI's support forum, multiple users -- Quartz counted at least 14 separate complaints across two forum posts -- have reported that while they were flying, their Spark drones have switched off and fallen like rocks out of the sky. In some cases, the drones were close to the ground and were easy for their owners to retrieve and send diagnostic information to DJI, but in others, the drones crash landed in thick woods, or, in a couple of instances, in lakes. [...] It's not clear what caused these crashes -- some forum posters suggest some could've been user error, but others shared their drones' flight logs and showed nothing out of the ordinary had been happening before the crash. DJI told Quartz it was looking into the issues on the forums we uncovered. "DJI is aware of these reports and we are investigating to determine the causes," a spokesperson added.