FCBS/FCAS handling
FCBS/FCAS handling
(OP)
I would like to see how others in the MRO world are handling FCBS items. With each customer developing different methods of recording repair data and some not providing this detail to the MRO. Have any of you included additional worksteps in your repair document to record damage and repair detail? As an organization are you taking the approach that this is an operator requirement only? If the customer doesn't specify how the recording is too happen are you providing static analysis only and letting the customer decide how to handle the followup DTE requirements?





RE: FCBS/FCAS handling
but if you're designing a repair you Cannot only do static analysis, you Must consider DTA. it maybe be a single statement ("not primary structure") and you might get by without expressly stating this (it's obvious that this is not primary structure, and there is no programed inspection for it ...), but i think you'd be better writing down your logic. as for not getting OEM data, well it's always been that way and you're left with conservative assumptions that you can defend.
Most often DTA gets into repairs 'cause you have load transfer into a repair doubler (ie stress concentration) and usually you are preventing the OEM inspection (external doubler prevents external visual inspection of the pressure shell) and so you have to provide a new inspection task.
RE: FCBS/FCAS handling
RE: FCBS/FCAS handling
if you're creating your own RDC/RDA to substantiate your repair and it's a FAR25 plane then you Have to consider DTA.
If you're in the states (and i think you are, as you're using FAR26 terms) then you have to also consider FAR26 which clearly states "repairs".
IMHO, I don't think it's the operators responsibility to obtain the DTA. The MRO is approving the repair. If you're aren't delegated DTA (and who is, outside of the OEMs) the you have to get this approved by your local office. Again, IMHO the 12 months is intended to give the modifier time to complete the DTA without impacting servicability of the plane ... the static analysis shows that the repair should have sufficient durability and cracks are not expected inside of a year (or the threshold inspection is expected to exceed 1 year).
RE: FCBS/FCAS handling
RE: FCBS/FCAS handling
i think whoever is approving the repair is responsible to substantiate the repair and to define the ICAs, ie DTA. Ma and Pa (Kettle?) won't be delegated for 571, so they'll have to get the analysis approved by their local office.
just my 2c ...
RE: FCBS/FCAS handling
FCBS Items are subjected to far 25.571 so if a MRO does a repair on a FCBS location they have to satisfy the regulation, meaning providing the Dam Tol Analysis.
It is operator's responsability to make sure that the DTA for repairs on FCBS location done by the MRO. And no one can ignore the law.
Ben
Nacelle Stress Engineer (repair on Civil Aircraft)