Just a couple of things for you knuckle draggers.
IBF filters or most that I have worked on have a limited amount of permitted cleaning cycles.
IE every time you remove and clean its a cycle on the filter.
10 cycles come to mind with the 206 filters from a major suppler having recently replaced one recently due cycles. Cost was 6000 usd approx.
They are not so easy as just to remove and bang out then refit like a car filter.
If you follow the Maint. Instructions there is a very strict inspection, clean and reoil with approved products.
Recently the FAA is taking a stand against them as the manufactures of the IBF's have never supplied there own performance data with these items fitted to say what affect they have on the aircraft.
Read this interesting article
https://www.verticalmag.com/news/faa...rrier-filters/
To the OP looking at it from an engineers view follow the RFM and fly with the bypass door activated. Thats what its there for until they rectify the situation.
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