FAA will have ‘boots on the ground’ at Boeing 737 MAX factory until quality control deemed appropriate: report

FAA administrator Mike Whitaker says ‘couple of dozen’ inspectors are reviewing grounded planes

The head of the Federal Aviation Administration (FAA) is vowing that the agency will have "boots on the ground" at Boeing’s 737 MAX factory until it feels "comfortable" that its quality control system is working. 

The statements from administrator Mike Whitaker come as 737-9 MAX planes remain grounded by the FAA in the wake of a Jan. 5 incident in which one of the aircraft operated by Alaska Airlines lost a passenger door plug while in flight. The FAA has since announced an "audit involving the Boeing 737-9 MAX production line and its suppliers to evaluate Boeing’s compliance with its approved quality procedures." 

"We've got a lot of inspectors on the ground, visually inspecting the aircraft as it comes through," Whitaker told CNBC on Tuesday. "We're shifting from more of an audit approach to a direct inspection approach." 

"Until we're comfortable that the [quality control] system is working properly... we're going to have boots on the ground," he reportedly added. 

BOEING CEO TO MEET WITH SENATORS DURING 737 MAX 9 GROUNDING 

Alaska Boeing 737 Max 9

A plastic sheet covers an area of the fuselage of the Alaska Airlines N704AL Boeing 737-9 MAX aircraft outside a hangar at Portland International Airport on Jan. 8 in Portland, Oregon. (Photo by Mathieu Lewis-Rolland/Getty Images / Getty Images)

Whitaker also said the FAA has sent a "couple of dozen" inspectors to look over the planes and that the inspections have "been longer" than the estimated four to eight hours per aircraft. 

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"We've required a lot of measurements," Whitaker told CNBC. "Once the area's exposed, we want to understand bolt tensions and gaps and things of that nature. So we've required more data than would normally be the case because we really wanted to understand the issue." 

Meanwhile, Boeing CEO Dave Calhoun is reportedly planning to meet with a group of senators on Capitol Hill this week.  

DELTA BOEING PLANE LOSES NOSE TIRE MOMENTS BEFORE TAKEOFF 

Boeing Logo

The Boeing headquarters is seen in Arlington, Virginia. (Photo by OLIVIER DOULIERY/AFP via Getty Images / Getty Images)

Alaska Airlines CEO Ben Minicucci also has vented his frustration at Boeing following the Jan. 5 incident. 

"I'm angry. I'm more than frustrated and disappointed. I am angry," he recently told "NBC Nightly News." "This happened to Alaska Airlines. It happened to our guests and happened to our people." 

The Alaska Airlines CEO said the airline found loose bolts on many of the 737 MAX 9 jets it inspected in its fleet. 

Boeing 737 MAX 9

An Alaska Airlines Boeing 737-9 MAX aircraft is seen grounded at Seattle-Tacoma International Airport in Seattle on Jan. 6. (David Ryder/Bloomberg via Getty Images / Getty Images)

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"And — my demand on Boeing is what are they going to do to improve their quality programs in-house," he added. 

Fox Business' Sarah Rumpf-Whitten contributed to this report.