In which mode of operation does the aircraft weather radar use a cosecant radiation pattern.

1) On a modern large pressurized transport aircraft, the maximum cabin differential pressure is approximately:

2) On most modern airliners the cabin pressure is controlled by regulating the:

3) In which mode of operation does the aircraft weather radar use a cosecant radiation pattern.

4) An aircraft is flying at flight level FL 180 and Mach number 0.36. Its onboard thermometer reads TAT = - 5°C. Considering that the probe recovery coefficient is 0.84, the present weather conditions compared with the standard atmosphere are:

5) Total Air Temperature (TAT) is: