SYMA GYRO REMOTE CONTROL SERIES User Manual page 19

Problem
In the headless
state, it is biased
towards the front
direction
Fixed high
instability / up and
down movement
Reason
1.Many collisions may cause
head drift.
1.The drone is not calibrated
level to the ground.
2.Unstable air pressure under
the severe weather condition.
3.Violent collision resulting in
data disorder of gyroscope.
-18-
Solution
1.Re-define the front
direction. For further
details, see No. 7
Page 8 for details
(Headless function).
1.Re-adjust the calibration
until the drone is level to
the ground. For further
details, see No.3 on Page
7 for details(Level
calibration function).
2.Avoid to fly under the
severe weather condition.
3.Make level adjustment
again, see No.3 on Page
7 for details (Level
calibration function).