The US airline industry is reeling from the latest round of credit card fraud that hit several major US carriers last week.
The latest news comes as regulators and the US Department of Justice are investigating whether the companies responsible for the fraud are responsible for fraud that led to the deaths of two passengers on a flight from Los Angeles to Dallas last month.
The airlines were in talks to resolve the matter by Monday, but that is unlikely.
The US Office of the Inspector General is investigating the companies and is expected to make a decision by Wednesday.
On Friday, US Federal Aviation Administration (FAA) investigators said that a flight attendant at American Airlines Flight 787-9 had left the cockpit after she had been instructed to change the cabin temperature to 77 degrees Celsius (154 degrees Fahrenheit) in order to maintain cabin pressure.
The flight attendant had been working in the cockpit during a delay when the temperature had dropped to 77.
The crew had switched the temperature back to 77, the report said.
Airlines in Europe and Japan have also been affected by the fraud, as has several large US carriers, including American Airlines.
On Wednesday, a group of US airlines sent letters to US President Donald Trump asking him to intervene to prevent the airlines from being “hijacked by foreign countries”.
“We have been impacted by frauds that are a direct result of the use of fraud-prone credit cards,” the letter read.
“The fraudulent activities are costing the airlines billions of dollars and have put many lives at risk.”