SAN FRANCISCO - A San Francisco man says he was asked to move seats on a plane in China because of his prosthetic leg, and it's all on cellphone video.
VIDEO: Roundup of recent air travel trouble
Tim Seward took the cellphone video of an Asiana Airline employee asking him to move out of his exit row seat on a flight from Beijing to Seoul on Sunday because of his prosthetic leg.
"I cannot prove your leg is functional," the employee is heard asking in the video. "You cannot prove my leg is functional?" Seward responded, to which the employee responded, "No, I cannot prove it."
RELATED: Lawyer says man dragged from United flight lost teeth, suffered concussion
"I do feel discriminated against," Seward said. He said he paid extra for a seat with more leg room, has sat in exit rows many times and is fully capable of performing the necessary safety duties.
"He even said that I wasn't a normal person and I was trying to record him and I was kind of shaking a little. It was painful to hear," he said. "They threatened me that they were going to kick me off the plane."
RELATED: American Airlines apologizes after mother allegedly hit by flight attendant at SFO
So Seward agreed to move to a different seat without extra leg room.
"I think, in this case, he did the right thing," said retired commercial airlines pilot Chris Zwingle. He agrees Seward was discriminated against. However, he said complying and then filing a complaint later is best practice.
"Asserting your right at the time of the issue with the carrier could result in a delay, could result in removal," Zwingle said.
RELATED: Man allegedly tries to breach cockpit on flight from LAX to Honolulu
Seward's story has elicited a strong reaction on social media, from a flying public bombarded with stories this year of passengers being mistreated on planes.
Many of the incidents are being captured on cellphone video, like Dr. David Dao being dragged off a United flight.
RELATED: Airline satisfaction at an all-time high, according to new study
"I feel like it's making it easier to hold people accountable for their actions because, in the past when we didn't have videos, it would be one person's word against another," passenger Danielle Griffith said.
The FAA's policy allows physically capable people with prosthetics to sit in an exit row. But ABC7 News is still waiting for comment from Asiana Airlines about their policy in South Korea.
Asiana did reach out to Seward about this incident. They said they needed time to investigate but apologized for what happened.
RELATED: SoCal family thrown off overbooked Delta flight over child's seating
Click here for more stories, videos and pictures on air travel