Safety Considerations
Special precautions must be taken when raising an aircraft
on jacks.
1. Stress plates must be installed under the jack pads if the
manufacturer specifies them.
2. If anyone is required to be in the aircraft while it is
being jacked, there must be no movement.
3. The jacks must be straight under the jack pads before
beginning to raise the aircraft.
4. All jacks must be raised simultaneously and the safety
devices are against the jack cylinder to prevent the
aircraft tipping if any jack should lose pressure. Not all
jacks have screw down collars, some use drop pins or
friction locks.
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