After an airliner’s roof ripped open while flying nearly 34,000 miles in the air, the Federal Aviation Administration ordered an inspection of similar Boeing 737s in order to avoid an aircraft malfunction.

Officials were preparing an inspection for 80 similar Southwest Airline Boeing 737s because it is a concern that these planes may have developed microscopic tears in the aluminum from taking off and landing at least seven times a day.

The 80 aircrafts were told to land so that cuts in the aluminum shield could be searched for. Sixty-four of these planes were cleared, but cracks were found in three of them. This incident has brought up questions about the impact that frequent landings and takeoffs can have on aircrafts.