More delays could keep Boeing 737 Max jets grounded well into the holiday travel season.  As KCBS Radio's Matt Bigler reports air regulators say the company isn't doing enough to explain how it's changed the planes' flight control system.

<p>More delays could keep Boeing 737 Max jets grounded well into the holiday travel season. &nbsp;As KCBS Radio's Matt Bigler reports air regulators say the company isn't doing enough to explain how it's changed the planes' flight control system.</p>

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