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Jonker Sailplanes JS3 RES - Inspections; Trailer Considerations

Jonker Sailplanes JS3 RES
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JS-MD 3 RES Maintenance Manual
Supplement
MD11-AMM-00-002
Issue: 00
Rev. 00
Rev. Date: 23-May-22
Page 10-2
Inspections
The following inspections should be performed regularly typically before installing the batteries
into the fuselage:
Verify the lifting handles on top of each battery are securely attached to the hard-shell
case with no indication of detaching or signs of loose fasteners.
Verify the latch plate at the rear of each battery is firmly attached to the hard-shell case
and that its fasteners are secure.
Visually inspect the multi-pin connector at the front of the shell for any sign of contact
pin damage or debris. Clean with filtered compressed air and/or contact cleaner spray.
Additionally, inspect the fasteners that secure the connector to the shell.
Verify the locator guide pin at the front of the shell is without any play and rigidly attached
to the case.
Verify the integrity of the exhaust port sleeve at the lower front region of the shell.
Visually check that the low-profile fasteners around the edge of the shell are secure.
Inspect the entire shell (especially the bottom sliding surface and the corners) for any
indication of wear, cracks, or puncturing through the walls.
Trailer considerations
Batteries have a mass of 50 kg (110 lbs) for the pair. Their placement in the trailer (if stored
outside the fuselage) can therefore affect the CG of the trailer noticeably. The trailer behavior
on roads and motorways can easily be made unstable rendering the towing vehicle unsafe to
drive.

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