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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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2
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5
Dated: 29th October 2014
Issued By: AS
Page: 52 of 298
5.11 Landing Gear 100-Hourly
As all possible circumstances cannot be listed here, the following is provided as guidance only. A
critical, trained eye is required and inspections should include, but not be limited to, the following.
Visually inspect the attitude of the aircraft on the ground: if the aircraft has developed a lean to one
side since its last maintenance it is a likely indicator of insufficient tyre pressure or damage to an
undercarriage leg.
Where equipped, check the ShockWatch indicator as detailed in Section 6.3. Re-set the indicator
before returning to service.
Remove the nose and main wheel fairings and inspect then for cracks, fraying, rubbing or other
damage.
While the fairings are removed, inspect the wheels. Visually inspect the wheel for run-out which may
occur due to a dent in the rim. Inspect for cracks, damaged hardware, corrosion and any other
damage.
Jack the aircraft and pull the un-loaded main undercarriage leg fwd and aft to check for looseness.
Repeat for the second leg.
Inspect the nose leg, steering links, tension links & fairings. Check for dents, bends, cracks,
corrosion, damaged or missing hardware and signs of rubbing etc. Wriggle the trailing arm front
suspension and check for any slop or wear in the pivot bushings of the suspension.
Check for smooth rotation with no bearing “rumble” or slop. Replace worn or damaged bearings.
Inspect the nose gear housing & bushes for wear
– ensure there is no excess vertical or horizontal
slop in the fit of the leg to the housing.
Inspect the main gear struts, clamps, bolts & nuts. Check for rubbing, cracks, corrosion, missing or
damaged hardware and any other damage.
Replace the main gear bolts at the life indicated in Section 5.3 or earlier if the airframe is subject to
rough runways, taxiways or training operations.
Check the tyre pressure and the condition of tyres & tubes. Examine tyres for wear, cuts, bruises
and slippage
Apply the hand brake. Standing in front of the aircraft, pull firmly on the propeller
– placing hands
immediately beside the spinner. Rock the aircraft forward and aft, left and right while observing the
nose leg and both main legs. Any excess movement, noise or vibration which is apparent during this
test can indicate deterioration in the undercarriage legs, fastenings or mechanism and must be
corrected.
Inspect all rod ends to ensure condition, freedom of movement and secure lock-nuts.
Visuall
y inspect nose leg steering “soft link” (where equipped). Ensure the rubber is in good
condition and that all the parts and hardware are not damaged or corroded.
Check brake master cylinder and refill with automotive brake fluid
(DOT 3 or DOT 4)
Bleed the brake
system of any trapped air whenever there is a spongy response on the brake lever.
Check that discs are straight, not excessively corroded and not worn outside of limits.
Check for brake fluid leaks, chafing or other damage to brake hoses. Ensure that the brake linings
have sufficient wear remaining to reach the next scheduled maintenance. Check brake assemblies
& master cylinder for rubbing, damaged or missing hardware or corrosion. Carry out a brake
operational check. Refer to Section 6.43 for filling and bleeding of the brake system.
CAUTION
The JABIRU uses automotive brake fluid (DOT 3 or DOT 4). DO NOT use Aircraft hydraulic fluid
(mineral based) or damage to the brake system will result.