Troubleshooting
Pitch or Roll
instability
The orientation sensors on the eBee detected unusu-
ally high pitch or roll values even after performing
stabilization. This may be due to strong winds or
damaged airframe.
Security action: The drone continues normal flight
while trying to stabilize the pitch as much as possible.
User action: If the condition persists during a flight,
land and wait for the wind to decrease, as explained
in section ‘Weather check’ on page 27. If the prob-
lem occurs in low-wing conditions perform Check 2
in section ‘Full airframe and sensor inspection’ on
page 131.
8.4 Critical failures
A critical failure is an error that occurs in flight that prevents the continuation
of normal flight. This is the most serious type of error that can occur with the
eBee, and is indicated in red in eMotion. The ‘WARNING’ button in the Control Bar
changes to ‘CRITICAL FAILURE’, becomes red and cannot be acknowledged. When
a critical failure occurs flight is aborted and the drone initiates an Emergency ac-
tion in which it is immediately directed to the ground. The Emergency action for
each Critical failure is designed to minimize the airspeed and thus impact energy
with the ground using the sensors that are still functioning.
Table 6 on the next page describes the critical failures that may occur and what
action is taken by the drone. In some cases it may be possible to manually control
the drone using the remote control⁶⁰. If such a critical failure occurs that results
in an Emergency landing we recommend that you keep track of the drone’s last
⁶⁰ see section ‘Manual control of the eBee’ on page 120
155
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