Update: we now have 3 C152 and a PA28 grounded. With 2 C152 and a diamond (I think) being in servicing, we only have 2 or 3 C152 and a diamond that are still "airworthy". Management is pulling their hair out right now

Thankfully, as they are the operator of the whole airfield as well, they have their very own mechanics here so at least they can get them working on the problems straight away.