Yeah, the time NOT to do it is at the field, just before you setup to fly. You may just ignore some important warning signs and fly anyway (Yep, learn by example.. we have all done that... at times it is costly, at others, you find the defects during flight, land, then go home to fix the problem with a sad look on your face). Or, you can be at the field getting ready to fly, then find something that cannot be fixed at the field and simply head home, again, with that disappointed look on your face.

If it breaks during flight, it may lead to more than just going home with a disappointed look on your face.. you may be carrying the plane in a plastic bag.

Just take the time, perhaps the night before... or whenever you can fit that in the schedule, to go completely over the plane and make sure nothing serious has developed.

BUT NEVER fly without doing a complete pre-fly examination, even if you spent two hours the night before going over the plane. Check it out. Make sure you did not break something in the car on the way to the field.

DS.