Now Now, Girls, handbags down!
Really!....Unless it's "security" protocol to keep this information restricted, the first reply could have given the info. Then it degenerates into a handbagging.
I'm with Gulfstream on this, ( but I'm not even an Aviator) All we've learnt is that a straightforward jack is suddenly 25K as opposed to under 500 if it's for Commercial Vehicle use.....and yes, they DO have to be certified and have an annual engineering inspection......unlike the Aircraft scenario, the wheels on a HGV are usually tucked in a tight spot and a jack-failure could be a lot more of a headache than an exposed bogie dropping onto it's remaining axles!
Terry...It's called "using your initiative"
maybe he's after promotion and getting this enquiry progressed beyond the "casual" stage is going to be a big step forward in this recessionary age.
On The Other Hand, "Winglit " may be a thick grease monkey who thought he could barge into a "professional Engineers" Forum and be taken seriously
No offence taken or meant in any of the forgoing.