Main reason behind deflating a wheel
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Because the RAF never taught it, and if it was it was never applied.. And RAF bay maintained wheels would never be found in the state some civilian types are found in! 
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As some have mentioned, tie bolts are the issue here. When the wheel is released from the shop the tie bolts have been inspected and can be considered to be serviceable. The same is not necessarily true after service when they may be corroded or have the beginnings of cracks. If the tie bolts are weakened the removal of the axle nut then puts all the pressure from the inflated tire on the tie bolts and creates the risk they could fail allowing explosive release of pressure (about the same as 2 sticks of dynamite).
Hub cracks are not an issue as any cracks will allow loss of gas, and I have seen many cracked hubs rejected after return for px loss.
Post removal there are many good reasons not to want to deal with inflated tires. They have a round profile and can topple over, making them harder to handle thru stores. If there are cuts in the cords (common) you again have an explosion risk. They are dangerous cargo if transported by road or air. And if rolled off the back of a truck they have a near 100% bounce!
About 30psi is ideal, that stops the tire rolling off the rim (especially radials) but is safe to handle.
Hub cracks are not an issue as any cracks will allow loss of gas, and I have seen many cracked hubs rejected after return for px loss.
Post removal there are many good reasons not to want to deal with inflated tires. They have a round profile and can topple over, making them harder to handle thru stores. If there are cuts in the cords (common) you again have an explosion risk. They are dangerous cargo if transported by road or air. And if rolled off the back of a truck they have a near 100% bounce!
About 30psi is ideal, that stops the tire rolling off the rim (especially radials) but is safe to handle.
Brigid will be along in a minute.
Then it really gets nasty.
Then it really gets nasty.
Ol' John bull
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That's right
Hitcher give'em hell they will say " we don't care about that" til' they hang themselves with their safety ambivalence and short cuts, if it has 10 studs it should have 10 nuts if it has a threaded valve stem something should be on the threads, the guys are a bunch of arrogant know betters who will watch the clean up from the disaster on TV and laugh about it and learn nothing.
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Hitch/Brig, That is some quite bizarre posting. I am beginning to understand the philosophy behind psychometric interviewing techniques. I would imagine they would be quite effective in keeping people like this from any form of role where they can actually make decisions and have an effect on safety of flight.
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Don't
patronize me, funnies or not or whatever it all boils down to the most important thing, Flight safety should supersede all other considerations that means the ego' the pride in nationality, the arrogance associated with most men with what they do, they do they're job better and are so much better than anybody else and what they know is the " right " thing and the rest are F****ing the dog.
What does all that mean ? Well to me it means that some people can't be taught they " know " and they are the danger in aviation.
What does all that mean ? Well to me it means that some people can't be taught they " know " and they are the danger in aviation.
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brought it to the attention of the engineers who told me the wheel could have exploded when removed.
BTW, what is an Aircraft Workshop Manual ?
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(The Hitcher aka Brigid) brought it to the attention of the engineers who told me the wheel could have exploded when removed.
Not if you deflate it first (per AMM) before undoing the axle nut it wouldn't, as per the thread title
(Brigid aka The Hitcher) " we don't care about that" attitude
When have we ever said that
Not if you deflate it first (per AMM) before undoing the axle nut it wouldn't, as per the thread title
(Brigid aka The Hitcher) " we don't care about that" attitude
When have we ever said that
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You
keep saying the Hitcher/Brigid and mentioning things that were posted, I have gone back and Hitcher seems to be deleting past posts so I don't have a clue what the hell you're talking about, it is all rather amusing this alter ego I have now but ya know " sticks and stones "
Thought police antagonist
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An interesting contradiction here. A long time ago, I had the misfortune to work in a Hyd / Tyre bay c/o the UK's flying club ( by virtue of being absent when the post became vacant and thus the only one unable to object...those of us who have worked for said club will be aware of this selection criteria ) and we used to receive Lightning mains wtl ...and fully inflated...around 200psi... I think...the subsequent Eddy current NDT on the hubs invariably failed a few....in contrast, on arrival in the civilian world, the px was always released prior to removal....for the very obvious reasons mentioned here...Dunlop's used to have some "rather interesting" footage of what happens when a wheel assy. decides to fail....the footage should be compulsory viewing..in my less than humble opinion...as a sober reminder as to the effects of stupidity when in the vicinity of wheel assy's.
" the guys are a bunch of arrogant know betters who will watch the clean up from the disaster on TV and laugh about it and learn nothing
Brigid....some rather delicate questions....albeit salient ones...for your ego.
1 Have to ever witnessed a fatal air crash / accident Mil and / or Civil ?
2 Have you ever had to recover the wreckage ?
3.Have you ever lost friends as a result of Q1?
Take your time when answering, preferably coherently ( if possible, albeit this would set a precedent ) and then explain why it is I, and indeed the majority of people, do not laugh at these programmes. I should add there is a significant difference between the "black" humour that emerges within our profession and finding such events humourous,
To save to wondering, the answer in my case to all three is yes.
Quite why you have elected to partake in this forum, in the manner you do, is beyond my, and I suspect most posters on here, comprehension.
" the guys are a bunch of arrogant know betters who will watch the clean up from the disaster on TV and laugh about it and learn nothing
Brigid....some rather delicate questions....albeit salient ones...for your ego.
1 Have to ever witnessed a fatal air crash / accident Mil and / or Civil ?
2 Have you ever had to recover the wreckage ?
3.Have you ever lost friends as a result of Q1?
Take your time when answering, preferably coherently ( if possible, albeit this would set a precedent ) and then explain why it is I, and indeed the majority of people, do not laugh at these programmes. I should add there is a significant difference between the "black" humour that emerges within our profession and finding such events humourous,
To save to wondering, the answer in my case to all three is yes.
Quite why you have elected to partake in this forum, in the manner you do, is beyond my, and I suspect most posters on here, comprehension.
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Wheel Pressure
I agree. The real reason is that without the axial restraint of the wheel nut any flaw(crack) in the hub is less restrained from uncontained failure. Also a low (transport pressure) tyre is less of a hazard to move and transport.