Environmental advocates, local leaders and the aviation industry itself all say the country's general aviation fleet needs to make the transition to cleaner-burning gas, but how to make that happen? And how fast to go? Those are questions that are sparking heated debate, including here in the Bay Area. 

On this edition of KCBS In Depth, we discuss the leading role that Santa Clara County has taken in this work, and also hear why some within the industry have been critical of the county’s approach, warning that moving too fast could make the skies less safe. 

Guests: 

• Ariel Wittenberg, public health reporter, E&E News
• Mark Baker, president, Aircraft Owners and Pilots Association  
• Cindy Chavez, supervisor, Santa Clara County

Host: Keith Menconi