More than 150 people on board a flight between Perth, Australia and Bali, Indonesia had a terrifying flight after their plane dropped 20,000 feet.

It all started when pilots were alerted to a possible cabin pressure loss, the BBC reported.

Flight QZ535 had been flying at 34,000 feet according to Flightaware.com, then quickly went to 10,000 feet within minutes, CNN reported.

Passengers said that flight crew panicked during the air emergency as oxygen masks dropped from the ceiling, The Associated Press reported.

This Sunday, Oct. 15, 2017 image made from video shows a crying passenger at an airport in Perth, Australia after an Indonesia AirAsia flight from Australia to the holiday island of Bali returned safely to the airport. Passengers on the flight described a panicked flight crew announcing an emergency and oxygen masks dropping from the ceiling after their airliner lost cabin air pressure and rapidly descended. (Channel 7 via AP)

Credit: (Channel 7 via AP)

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Credit: (Channel 7 via AP)

“The panic was escalated because of the behavior of staff who were screaming, looked tearful and shocked,” Clare Askew, a passenger on the flight, said.

Another passenger said that “Hostesses started screaming: ‘Emergency, emergency.’ They just went hysterical.”

Perth officials said the flight returned 78 minutes after it had taken off from Australia.

This is the second time in recent months that there had been a mid-air emergency involving an AsiaAir flight. In June, an AirAsia flight from Perth to Kuala Lumpur turned around when one of the plane’s engines failed. An aircrew member on that flight had told passengers to pray during the emergency.

In Dec. 2014, an AirAsia flight between Surabaya to Singapore crashed into the Java Sea. All 162 people on board were killed.