Records show fss.aero's operability was checked 1 times from February 20, 2019, through the subsequent 2 104 days. In 1 cases of operability throughout the tests, fss.aero's latest uptime on February 20, 2019, returned a 200 code. As of November 24, 2024, fss.aero has not experienced any downtime in assessments that have been completed. As of November 24, 2024, the replies indicate that no responses with error statuses were received. On February 20, 2019, records show a fss.aero response time of 0.538 seconds, compared to an average of 0.538 seconds.