Maintenance, Repair and Troubleshooting
Pitch or Roll
instability
The orientation sensors on the eBee RTK detected un-
usually high pitch or roll values even after perform-
ing 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 40. If the prob-
lem occurs in low-wing conditions perform Check 2
in section ‘Full airframe and sensor inspection’ on
page 151.
10.4 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 RTK, 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 Emer-
gency action in which it is immediately directed to the ground. The Emergency
action for each Critical failure is designed to minimize the airspeed and thus im-
pact energy with the ground using the sensors that are still functioning.
Table 6 on the following 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 control⁶². If such a critical failure occurs that
results in an Emergency landing we recommend that you keep track of the drone’s
⁶² see section ‘Manual control of the eBee RTK’ on page 140
176
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