Welcome to Seeking Alpha's Wall Street Lunch, our afternoon update on today's market action news and analysis.

Good afternoon. Today is Tuesday January 9th and I'm your host Kim Kahn. Our top story so far.

United Airlines and Alaska Airlines say they found loose parts on some Boeing 737 Max9 planes that they inspected in response to a mid-air

emergency. The discovery indicates quality control issues at Boeing aren't confined to the

Alaska Airlines plane that was forced to make an emergency landing.

The airlines disclose their findings before the NTSB and provided more details about the

incident.

A door plug covering an unused emergency exit blew out of the plane at an altitude of 16,000 feet after moving from stops that are supposed to keep it in place.

Four bolts were missing, investigators said.

They're looking into whether the bolts had been

installed when the cabin was being built. United said in a statement that inspections had

found instances that appeared to relate to installation issues in the door plug, for example bolts that needed additional tightening.

The airline said maintenance staff would fix the plug to receive approval to operate the planes again.

Alaska Airlines said initial reports from technicians

access the plug area and saw loose hardware on some planes. The carrier said

it will make necessary repairs to satisfy its safety standards and compliance with the FAA. In today's trading, stocks

are giving back some of the gains seen on Monday. The major averages are in the red, but trading

has been fairly choppy. Healthcare is the only sector in the green,

while energy is again the weakest.

Oil's decline helped equities yesterday,

but it's moving back up today.

W.T.I. Crude is gaining more than 2%. Analysts said geopolitical tensions in the Middle East

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