Here’s the text to the listening from yesterday.
An ATR-42 , with 36 passengers on board was taxiing to the runway when the captain noticed a cargo door warning light. He thought it was a malfunction and continued with the takeoff.
As the plane took off it didn’t pressurize correctly and as a result, the captain decided to return to their airport of origin before reaching FL080. They landed safely 12 minutes after departure.
After an inspection on the ground, it was discovered that the cargo door had not been closed properly.