A United Airbus A319-100, registration N804UA performing flight UA-413 from Houston Intercontintental,TX to Orlando,FL (USA), had departed Houston's runway performed an approach to Orlando's runway 18R but tracked slightly right of the runway and descended to 2300 feet MSL over the grass between runway and apron. The aircraft subsequently went around, positioned for another approach to runway 18R now tracking the runway center line on profile and landed without further incident.
A passenger reported they remained unaware of anything unusual until the aircraft went around at Orlando. The captain subsequently announced a landing gear issue. Upon second approach and touchdown there was a sound like a "crunch on landing". Emergency services sprayed the landing, the captain said to cool the landing gear. They remained in position for about 30 minutes, then they taxied or were towed to the terminal with loud thumping.
The aircraft is still on the ground in Orlando about 22 hours after landing.