Rank: Forum user 
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Hello Forum, How are aircraft hydraulic jacks (not vehicle ones) viewed in regards to LOLER inspections thorough examination as I have had conflicting information from; No they don’t, Yes they do, weight check only under LOLER???, and they are trestles!! - Yes when at rest but not during lift or lower. Under PUWER they are serviced/ maintained as you would expect but I am sure they also fall under LOLER as well as a piece of lifting equipment I would be interested to hear from someone who knows this or has had any interventions from the HSE on the subject - Unfortunately there is no HSE documentation specifically on the items?
Yours in anticipation
JP
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Rank: Super forum user
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What is an aircraft jack? Are you talking about lifting the
wheels during takeoff and landing? If that’s the case I would say not lOLAR as
they are not lifting the load – I would count the wheel as part of the equipment
– Look at the HSE examples https://www.hse.gov.uk/work-equipment-machinery/lift-equipment.htm
so a bit like the roller shutter door – If however its something that you use
separately to lift the aircraft off the floor for maintenance, etc then I would
say LOLAR.
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Rank: Forum user
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Rank: Forum user
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Wheeled or unwheeled jacks?
Full clear lift or support only?
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Rank: Forum user
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If I understood ths question correct then yes. I take it you are talking about jacks that lift a load(aircraft) LOLER defines as “an operation concerned with the lifting or lowering of a load”
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Rank: Super forum user
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Aircraft jacks are usually hydraulic in operation. A hand pump on the side, to pump oil into the lifting ram. The ram has an lifting adaptor slotted into the top that locates in to the jacking point on the underside of the aircraft.
To stabilse the jacks, thay have 4 legs which after lifting the aircraft are then adjusted to take up the weight of the aircraft off the hydraulic fluid. A locking collar is then screwed down the hydraulic ram, and locks/sits against the body of the jack to provide a mechanical lock to prevent the aircraft descending if the hydraulic ram fails.
LOLER inspections are required. Aircraft are raised on jacks for a variety of reasons
to change wheels or brake units (often just a small leg that compresses the undercarriage oleo to lift the wheel clear of the grounf.
to replace faulty undercarriage legs
to test / check the function of the undercarriage
to allow the aircraft to be rigged - to check the wing dihedral
to replace wings
after heavy/hard landings to chack for damage
to check weapons electrical circuits, if for some reason the weapons system scotch is not available
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 1 user thanked Ian Bell2 for this useful post.
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