Air traffic controllers at Salt Lake City International Airport are now probably very physically fit. Because of damage from the 5.7 earthquake on March 18, they had to walk up 25 stories worth of stairs in the tower every workday for four months.

But its once-damaged elevator is finally repaired and in good working order, according to a statement from the Federal Aviation Administration in response to questions from The Salt Lake Tribune.

“The repairs took almost four months to complete, which included contracting, scheduling and getting parts,” the statements said. “Due to the global pandemic, it was difficult getting parts in a timely manner.”

During the earthquake, a water tank valve malfunctioned, causing the tank to purge and dump water into the elevator shaft — which caused most of the elevator damage.