Flying Phantom 4 Over 1,600 Feet

[N017RW]

Past understanding is that 500M is in AC firmware and zero altitude is set at motor speed above 10% when taking off.

 

[SoundByte]

Past understanding is that 500M is in AC firmware and zero altitude is set at motor speed above 10% when taking off.

I've actually had the low point confirmed before starting the motors. You just have to wait awhile for it to happen.