3D Robotics RTF Aero - Manual (Page 23)

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If any of the components or assemblies in these checks are
not secure, tighten the screws or use CA glue (super glue)
to secure the components to the foam.
Power on the RC transmitter, and set the throttle fully down.
airspeed sensor
Check that the airspeed sensor is secured to the side of
the Aero and the tube is free from obstructions.
Open the battery compartment by sliding the knob
on the orange switch and lifting out the foam lid.
2