Jabiru Aircraft
Pilot Operating Handbook
Model J230-D
Revision:
6
28/2/2020
Page 32
Loss of Flight Controls
It is a requirement of the design standard that the following section be included in this manual,
however such failures are extremely rare. As always, the 3 key rules apply:
1.
Maintain
Aircraft Control.
2.
Analyse
the situation before taking appropriate action.
Don’t act without thinking.
3.
Land
as soon as practicable.
Primary flight controls failures can potentially be caused by the following:
1.
Failure caused when either end of the cable becomes free of its clamp
2.
Failure of the cable connecting hardware (bolts, rod ends etc)
3.
Failure of the cable itself.
4.
Jamming of the controls within the cabin
5.
Jamming of the external controls
6.
Structural failure of the control
7.
Failure of autopilot mechanism
In an emergency the secondary effect of controls may be used to direct the aircraft:
1.
The secondary effect of the rudder is to roll the aircraft. Loss of aileron control can be
partially addressed through the use of the rudder.
2.
The secondary effect of the aileron is to yaw the aircraft. Loss of rudder control can be
partially addressed through the use of the ailerons.
3.
The trim mechanism is separate to the elevator system and can be used to control the
pitch and attitude of the aircraft.
4.
In some cases the autopilot mechanism (where equipped) may still function and can be
used to control the aircraft.
5.
Wing flap position and engine power setting also affect the pitch of the aircraft and can
be used to assist in control.
In some cases, shaking a jammed control can free it. However it can also potentially exacerbate
the problem. Shaking is therefore not recommended until other troubleshooting techniques have
been attempted.
The following steps are recommended:
1.
Secondary control .............................................. APPLY
2.
Cabin end of control cable ................................. CHECK CLAMP & HARDWARE
3.
Control mechanism inside cabin ........................ CHECK. Clear any obstructions
4.
Control............................................................... SHAKE
5.
Brute Force........................................................ APPLY
6.
Land .................................................................. AS SOON AS PRACTICAL
WARNING
Where possible have a passenger carry out checks. Complicated or awkward trouble-shooting
measur
es which divert the pilot’s attention should be avoided if possible.
