Narrative:

On left downwind for runway xx; another aircraft was joining the pattern and communicated that they were joining right downwind runway xx. This made me concerned they didn't know that it was left traffic pattern at ZZZ; and was scanning the right downwind for any traffic. As I was turning left base I made sure they were not on right downwind; and as I turned final I could see the plane was on left downwind and had communicated wrongly. When flaring the plane and waiting for the wheels to touch down; I suddenly heard a loud scraping sound of the body of the plane sliding on the pavement. I immediately turned off all electrical systems and the fuel to off position and evacuated the plane as soon as it came to a stop.I have learned that even by using the checklist going through the gumps on downwind; base and final; you can during an event of increased workload be distracted; resulting in not following through with the mechanical input of the action described and read on the checklist.

Google
 

Original NASA ASRS Text

Title: PA28 pilot reported a gear up landing after being distracted by other traffic in the pattern.

Narrative: On LEFT downwind for Runway XX; another aircraft was joining the pattern and communicated that they were joining RIGHT downwind Runway XX. This made me concerned they didn't know that it was LEFT traffic pattern at ZZZ; and was scanning the RIGHT downwind for any traffic. As I was turning LEFT base I made sure they were not on RIGHT downwind; and as I turned final I could see the plane was on LEFT downwind and had communicated wrongly. When flaring the plane and waiting for the wheels to touch down; I suddenly heard a loud scraping sound of the body of the plane sliding on the pavement. I immediately turned off all electrical systems and the fuel to off position and evacuated the plane as soon as it came to a stop.I have learned that even by using the checklist going through the GUMPS on downwind; base and final; you can during an event of increased workload be distracted; resulting in not following through with the mechanical input of the action described and read on the checklist.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.