Sign up for our daily briefing

Make your busy days simpler with Axios AM/PM. Catch up on what's new and why it matters in just 5 minutes.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Denver news in your inbox

Catch up on the most important stories affecting your hometown with Axios Denver

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Des Moines news in your inbox

Catch up on the most important stories affecting your hometown with Axios Des Moines

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Minneapolis-St. Paul news in your inbox

Catch up on the most important stories affecting your hometown with Axios Twin Cities

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Tampa Bay news in your inbox

Catch up on the most important stories affecting your hometown with Axios Tampa Bay

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Charlotte news in your inbox

Catch up on the most important stories affecting your hometown with Axios Charlotte

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Boeing 737 MAX 8 passenger planes at Phoenix Sky Harbor International Airport on March 13. Photo: Ralph Freso/Getty Images

Transportation Secretary Elaine Chao requested that the department's inspector general investigate the certification process the department followed that allowed the Boeing 737 MAX aircraft into the skies. Two Boeing 737 MAXs have crashed since October, leading to a worldwide grounding of the popular jetliner.

Why it matters: The investigation adds to the probes that Boeing is facing over the crash of a Lion Air 737 MAX 8 in October and the loss of an Ethiopian Airlines 737 MAX 8 on March 10. In the wake of the latter crash, the FAA, which is housed within the Transportation Department, ordered all 737 MAX aircraft grounded, after nearly every affected major country in the world had already done the same.

Details: In her letter to the inspector general, Chao wrote that she is seeking an "audit to compile an objective and detailed factual history of the activities that resulted in the certification of the Boeing 737 MAX 8 aircraft." In a Tweet Tuesday afternoon, Boeing said it will "fully cooperate in the Department of Transportation's audit announced by Secretary Chao."

Context: The main focus of the investigations into both crashes concern a software system known as MCAS that intervenes when it senses that a rare flight condition, known as a high speed stall, is taking place. In both crashes, it appears that the MCAS system repeatedly activated, forcing the plane's nose down and leading to a fatal crash.

A Seattle Times investigation, as well as other reporting, shows that the FAA may have been too deferential to Boeing in certifying that the MCAS system in particular, and the aircraft type in general, was safe to fly.

The big picture: Other investigations underway include two crash probes, one in Indonesia and another in Ethiopia, a reported grand jury criminal investigation into the aircraft's certification, and a mounting congressional probe.

Go deeper: What we've learned from the 737 MAX crashes

Go deeper

Biden to sign 15 executive actions on Day One

President-elect Joe Biden. Photo: SAUL LOEB/AFP via Getty Images

President-elect Joe Biden is expected to sign 15 executive actions upon taking office Wednesday, immediately reversing key Trump administration policies.

Why it matters: The 15 actions — aimed at issues like climate change and immigration — mark more drastic immediate steps compared with the two day-one actions from Biden's four predecessors combined, according to incoming White House press secretary Jen Psaki.

Off the Rails

Episode 7: Trump turns on Pence

Photo illustration: Eniola Odetunde/Axios. Photos: Elijah Nouvelage, Alex Wong/Getty Images

Beginning on election night 2020 and continuing through his final days in office, Donald Trump unraveled and dragged America with him, to the point that his followers sacked the U.S. Capitol with two weeks left in his term. Axios takes you inside the collapse of a president with a special series.

Episode 7: Trump turns on Pence. Trump believes the vice president can solve all his problems by simply refusing to certify the Electoral College results. It's a simple test of loyalty: Trump or the U.S. Constitution.

"The end is coming, Donald."

The male voice in the TV ad boomed through the White House residence during "Fox & Friends" commercial breaks. Over and over and over. "The end is coming, Donald. ... On Jan. 6, Mike Pence will put the nail in your political coffin."

Big Tech's post-riot reckoning

Photo illustration: Sarah Grillo/Axios. Photo: Tasos Katopodis/Getty Images

The Capitol insurrection means the anti-tech talk in Washington is more likely to lead to action, since it's ever clearer that the attack was planned, at least in part, on social media.

Why it matters: The big platforms may have hoped they'd move to D.C.'s back burner, with the Hill focused on the Biden agenda and the pandemic out of control. But now, there'll be no escaping harsh scrutiny.

You’ve caught up. Now what?

Sign up for Mike Allen’s daily Axios AM and PM newsletters to get smarter, faster on the news that matters.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!