That question is far too nebulous to answer.
What class of aircraft (airliner / helicopter / MEP / SEP / homebuilt / microlight / hang-glider/ parachute)?, what class of certification (public CofA / Private CofA / B-conditions / Permit to fly)?, which country?. which checks (pre-flight / daily / 50 hour / annual / star-annual)?
If you are a bit more specific, somebody might answer (might even be me !). But the word "checks" is far too wide for a simple answer.
G