During flight a fire, which was extinguished, burned the insulation from a transceiver wire. What action is required by regulations?

/in , /by

An ATC transponder is not to be used unless it has been tested, inspected, and found to comply with regulations within the preceding

/in , /by

What are the oxygen requirements when operating at cabin pressure altitudes above 15,000 feet MSL?

/in , /by