![](https://flightsafety.org/wp-content/uploads/2023/08/saab-door-seal-ATSBScreenshot-2023-08-15-142415.png)
The Saab 340 flight crew noted the broken door seal seat during a preflight inspection but incorrectly believed that it was a cosmetic problem reported by another crew the previous day. During climb-out after a takeoff from Canberra Airport, however, the cabin altitude was higher than normal; the crew descended and kept the airplane below 10,000 ft for the flight to Sydney, the Australian Transport Safety Bureau (ATSB) said.