United Airlines, which faced intense backlash over violently dragging off a passenger due to the flight being overbooked, has again made another policy change aimed at preventing such incident.
At least one other airline is rethinking its policy too.
A major United States airline is offering compensation of up to $9,950 (£7,950) per person for passengers denied boarding on overbooked flights.
Dr Dao refused to give up his seat last weekend on a flight from Chicago to Louisville for the airline's staff who needed to travel. Crews could previously be booked until the time of departure.
If the crew member has not checked in by the stipulated timing, they will not be allowed to travel on that flight.
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TMZ quoted an internal email that states, "No must ride crew member can displace a customer who has boarded an aircraft".
In cellphone videos now seen by millions around the world, Chicago Department of Aviation Police dragged Dao from his seat as shocked passengers watched. When nobody offered, the airline randomly chose passengers. Three complied, but David Dao, a Kentucky doctor, did not. However, if passengers will be delayed more than two hours (four hours for global flights) the guidelines double and airlines must pay four times the one-way fare, up to $1,350.
Over the previous year, airline stocks like American, Delta, Southwest and United have performed well.
"We were on the plane about an hour, having dinner, and then something fell on my head, so I grabbed it", passenger Richard Bell told CBS in a Skype interview on its website. No one should ever be mistreated this way.
It will announce the results by April 30.
To make matters worse, United issued a statement two days later, after a video of the incident had gone viral, that's a masterclass in passive-aggressive corporate buck-passing, attached to a report that called Dao "belligerent".