Peter – Why is’nt anyone “overhauling” the OEM pump ?
It has been claimed that is not an option. The POV put forward was that if there is no CMM (component maintenance manual) then a legal overhaul is not possible.
In practice, electric motors can be overhauled, but in most cases of oddball parts like this you have to do it off the books.
I have in the past used Trafford Rewinds for various non-aviation motors and they did every one at a very reasonable price.
But if the pump itself is gone…?
Peter wrote:
But if the pump itself is gone…?
Buy cores.
IMHO, a certified Repair Station could develop an overhaul procedure that would be satis to the Administrator.
I had a conversation with a US based DAR (who specialises in generating STCs) regarding the term “form fit and function”. This is his reply:
To get an STC in EASA for a replacement pump is probably not that daunting of a task. I’ve heard it’s much easier there than FAA land these days, and once it’s EASA approved, the route to FAA approval is also much easier. If it’s a part that you can foresee a great need for – why not do it? Could be a good little investment anyway.
