<p>US Transportation Secretary Pete Buttigieg said regulators want to ensure "full confidence" in dozens of Boeing 737 MAX airplanes that halted flights on Friday before they return to service.</p>.<p>US airlines halted the use of more than 65 Boeing 737 MAX planes after Boeing recommended the step over a production issue that could impact the operation of a backup power control unit.</p>.<p>Buttigieg said the issue was not related to the issues involved in the two fatal 737 MAX crashes that led to the plane's 20-month grounding.</p>.<p>"We need to make sure there is full confidence before these specific aircraft return to the air and that's what the (Federal Aviation Administration) will be closely monitoring," Buttigieg said at a White House briefing. </p>
<p>US Transportation Secretary Pete Buttigieg said regulators want to ensure "full confidence" in dozens of Boeing 737 MAX airplanes that halted flights on Friday before they return to service.</p>.<p>US airlines halted the use of more than 65 Boeing 737 MAX planes after Boeing recommended the step over a production issue that could impact the operation of a backup power control unit.</p>.<p>Buttigieg said the issue was not related to the issues involved in the two fatal 737 MAX crashes that led to the plane's 20-month grounding.</p>.<p>"We need to make sure there is full confidence before these specific aircraft return to the air and that's what the (Federal Aviation Administration) will be closely monitoring," Buttigieg said at a White House briefing. </p>