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>Take off whenever inspiration strikes. Weighing less than 249 g, Mini 4 Pro was designed for convenience on the go, [1] and the drone's weight means there's no need for training or examinations in most countries and regions.

Wasn't this loophole basically closed by the US FAA a couple years back?



https://www.faa.gov/uas/getting_started/register_drone still says "except those that weigh 0.55 pounds or less (less than 250 grams)".


It's not a loophole, it's a deliberate exemption!


Makes enough sense to me but curious why specifically? Are they quieter or less dangerous below that size / weight?


> Are they quieter or less dangerous below that size / weight?

F = m*v^2


Not F (force, which is m*a), but Ki (kinetic energy):

Ki = mv²/2


>F = mv^2*

F is some number of joules equal to twice E_k?


The FAA Part 107 examination claims this is because lightweight drones pose less harm to life (when accompanied by rotor guards.)


There isn’t much of an actual reason, the FAA has been all over the place without much logic when it comes to drone regulations.


UK and other countries have relaxed rules for drones under 250g, see here[0] as well as the FAA link.

[0] https://www.caa.co.uk/drones/rules-and-categories-of-drone-f...


Yesterdays compromise is today's loophole.




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