As I said yesterday in the Loganair thread in the Airlines, Airports and Routes forum, I flew CAL-GLA the day before the Aberdeen incident, and we had to reroute via Tiree because another a/c had gone tech. Not as dramatic (although the pax who missed their connections at GLA weren't happy) but that's two inops in two days, one in flight. on a small fleet.
The Highlands and Islands routes are frequently rough - the GLA-CAL flight I was on on the Monday had a very, er, exciting landing, so I don't doubt that the maintenance load is challenging to manage. But it all feels as if Loganair is operating very close to the edge, commercially and practically, and that's a really uncomfortable environment for everyone. Too many holes in this particular cheese.