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Aircraft Technical Manual
Jabiru Aircraft
Pty Ltd
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
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ISSUE
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Dated: 29th October 2014
Issued By: AS
Page: 173 of 298
6.64 Control Column (all J-Series)
6.64.1 Description
The same control panel is used for the elevator as for the ailerons. Drawings of the system are given
in Section 0.
A central shaft is located between the crew seats. The control column is mounted at the fwd end of
this shaft via a pivot.
6.64.2 Removal And Installation
Refer to the details given in Section 0.
6.65 Elevator (all J-Series)
6.65.1 Description
The elevator comprises a Rigid Cellular Polystyrene core moulded and bonded to a composite skin
and embodying a composite control horn at the centre. An elevator trim system is attached
– refer to
Section 6.68.
Note that some models (J170-C, J230, J250 families etc) use a wider-span horizontal tail and
elevator than the J160. This elevator is driven by the same control assembly as the J160.
6.65.2 Removal & Installation
Required Tools:
Screwdrivers
Spanners / Socket Wrench
Parts and Material:
N/A
Type of Maintenance:
Line Maintenance
Level of Certification:
L1, L2 or LAME (Owner, A&P or LSA Repairman / Maintenance)
Return to Service:
L1, L2 or LAME (Owner, A&P or LSA Repairman / Maintenance)
1.
Remove ventral fin from under tail to expose control cables etc.
2.
Unbolt cable from control horn.
3.
Unbolt trim linkage from control horn.
4.
Loosen screws in hinge pin retainers and lift hinge pin retainers from hinge pins. It is not
necessary to remove these parts.
5.
Remove hinge pins.
6.
Remove Elevator.
7.
Reverse the preceding steps for installation.
6.65.3 Elevator Balancing (J160, J170)
The J160/J170 Elevator is balanced during construction. A standard weight of 750 grams of lead is
placed in each control horn to balance the elevator. In service there should be no reason to
rebalance the elevator.
For the J160-C, balance may be checked with the control fitted to the aircraft & the control & trim
removed. Measure the force at the trailing edge required to keep the elevator level. Weight & hinge
moment values are given below:
-
Weight
4600g
+/- 100g
-
Hinge Moment
259000g.mm
+/- 4000g.mm