Keep in mind, it takes a college degree to fly a plane, but only a GED to fix one. Reassurance for those who fly routinely in our jobs.
After every flight, UPS pilots fill out a form called a "gripe sheet". It tells the mechanics about any problems they had with the aircraft. The mechanics correct the problems and document their repairs on the form. Then the pilots review the "gripe sheet" before their next flight. Here are some actual maintenance complaints submitted by UPS pilots (marked with a P) and the correction solutions recorded by maintenance engineers (marked with an S).
By the way, UPS is the only major airline that has never, ever, had an accident of any form.
P: Left inside main tire almost needs replacement.
S: Almost replaced left inside main tire.
P: Test flight OK, except auto-land very rough.
S: Auto-land NOT installed on this aircraft.
P: Something loose in cockpit.
S: Something tightened in cockpit
P: Dead bugs on windshield.
S: Live bugs on back-order.
P: Auto-pilot in altitude-hold mode produces a 200 ft per minute descent.
S: Cannot reproduce problem on ground.
P: Evidence of leak on right main landing gear.
S: Evidence removed.
P: DME Volume unbelievably loud.
S: DME volume set to more believable level.
P: Friction locks cause throttle levers to stick.
S: That's what friction locks are for.
P: IFF inoperative in OFF mode.
S: IFF always inoperative in OFF mode.
P: Suspected crack in windshield.
S: Suspect your right.
P: Number 3 engine missing
S: Engine found on right wing after brief search.
P: Aircraft handles funny. (I love this one)
S: Aircraft warned...to straighten up, fly right, and be serious or else.
P: Target radar hums.
S: Target radar reprogrammed with lyrics.
P: Mouse in cockpit.
S: Cat installed.
And saving the best for last.....
P: Noise coming from under the instrument panel. Sounds like a midget pounding on something with a hammer.
S: Took hammer away from midget.