Question id 305 - Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license

Aircraft General Knowledge - Airframe, Systems, Powerplant - In a pressurized aircraft whose cabin altitude is 8000', a crack in a cabin window makes it necessary to reduce the differential pressure to 5 psi.The flight level to be maintained in order to keep the same cabin altitude is:
Fl 230
FL 180
FL 280
Fl 340

Training tests and timed exam simulations ATPL - Airline Transport Pilot license