Not only are we out of fuel at this base, but as we fly out the last hours before scheduled maintenance, the airplane throws a fit and we have a burst of minor defects we have to defer in consultation with maintenance: the aforementioned CHT gauge, a couple of instrument lights, and a bit of an oil leak that maintenance was right about when they said it would be messy but would not worsen or cause a mechanical problem. (That wasn't done lightly: two pilots, two engineers and the PRM all had to agree on it). It`s pretty embarrassing how much can go wrong at once. You probably don't want to know how many things are wrong with any airplane you ride on as a passenger.
During my last revenue flight before scheduled maintenance, during flight the compass started sitting at an odd angle in the housing. I rarely consult the compass after start up, because I have other instruments that use a different compass to do the same job more effectively, but it's still a required instrument. I'm used to the compass bowl being tilted as an effect of northern latitudes -- I'll do a post on that sometime, as it's rather interesting -- but as I changed heading I saw that the behaviour of the compass wasn't matching the angle of the magnetic field lines at our latitude. The compass read accurately on all headings and led and lagged as expected on turns to north and south, but it just wasn't sitting the way it usually did inside the bowl.
There is much in the way of preventative maintenance that is done on a compass. It's just there. It isn't connected to anything, except it has wires running to its light. It's calibrated once a year, and the couple of degree differences between its indicated and bearings and what it should read are recorded on a card for my use, but it doesn't get oiled or tuned or remagnetized. It's just one more thing for this stupid weekend. I imagine the rectification for this snag will be "Compass told to smarten up and fly straight," or possibly "Pilot headrest adjusted so she can see straight."
My next flight will be a ferry, to take this bag of aluminum bones to a shop where it will have its complaints attended to. They are also going to change out the tachometers for electronic ones, as we've been changing too many tach cables lately. The right tach needle is already oscillating slightly, in the way that says "order a new tach cable now before I break."