I tried to fly my Mavic Air at night and the drone move itself immediately after take off, probably the obstacle sensing. I tried to land it before it crash and only touch a little the propellers with a wall.

1. When flying at night, should I deactivate the visual navigation (obstacle sensing)?
2. Should I change the propellers? (i attached pictures of them)

Propeller crashed 1

The obstacle sensing does NOT work at low light level. I will definitely change the props. You should not take any chances with  a compromised prop.

Sorry for your crash,   I am still awaiting my Air to arrive.   Good to know I need to make sure the sensing doesn't not work at night.   Ill need to make sure that's off before I film my Pyrotechnics Shows.   

Unfortunately that prop looks scuffed at the edges so I wouldn't fly with that one on anymore.

While the ends can be fine, other parts of the propeller could be cracked or weakened. Do replace! Cheap insurance really!

Definitely replace them.

PyroTekRob Posted at 2018-3-25 18:01
Sorry for your crash,   I am still awaiting my Air to arrive.   Good to know I need to make sure the sensing doesn't not work at night.   Ill need to make sure that's off before I film my Pyrotechnics Shows.

If you are new to drone, read the manual, practice in the academy then take it slowly outside in an open field and practice on all kind of scenarios before you fly at night...