That’s how my plane has been for a full week now, in the shop, waiting for parts to arrive from Piper via a supplier in Memphis via a second supplier in Montreal. Owners tend to say that the annual is the most unpredictable part of aircraft ownership — after all, it’s pretty straight forward to predict how much gas you’ll burn, how much your insurance will run, how much parking will be, how much your new Garmin 530 will cost installed (just dreaming), etc., but nobody knows whether the bill after an annual inspection will be US $1,500 or $15,000 (fortunately, mine have always ended up well in the first third of that range so far).
In fact, the annual inspection itself is very predictable — it takes about 25-30 hours for an experienced mechanic to run through the full Piper Warrior II annual inspection list properly, and maybe a couple more hours for run-of-the-mill AD and SB inspections. It’s just that most of us don’t have our (private) planes looked at in detail any other time of the year unless something is obviously broken, so it’s the annual inspection that finds most of the hidden problems. I’m considering adding an unofficial semi-annual inspection — maybe 4 hours in the shop late in the fall, when I need to change the oil and jack up the plane to get the wheel fairings off anyway. Just taking off the cowling and propeller spinner and letting the guys in the shop poke around for a few hours might find a lot of small problems before they become big ones.
After all, we get the family minivan inspected twice a year, and I can just pull over to the side of the road if something breaks on it.