ADS-B Out Equipped? You Must Keep in ON

FAR 91.215(c) allows that a transponder may be turned off in limited areas outside of controlled airspace.

However, 91.225(f) states “each person operating an aircraft equipped with ADS-B Out must operate this equipment in the transmit mode at all times.”

This means that while ADS-B Out may not be required in certain airspace until 2020, those who have already equipped must keep it turned on in all airspace.