Federal prosecutors and victims’ families are waiting for Boeing to decide whether to accept a plea deal that would settle a criminal fraud charge accusing the aerospace giant of misleading regulators who approved the 737 Max jetliner before two of the planes crashed.

Relatives of some of the 346 people who died in the October 2018 and March 2019 crashes are furious about the plea offer, which Justice Department prosecutors spelled out in an online meeting with the families and their lawyers on Sunday.

The families want to put Boeing on trial.

“This package offers another opportunity for Boeing to hide their misdeeds from the public,” Ike Riffel, a Californian whose two sons died in the second 737 Max crash, said Monday. “The families are very disappointed, but we vow to fight on.”

Paul Cassell, a former federal judge who is representing some of the victims’ families, called it “a sweetheart deal” for Boeing.

Some of the lawyers involved in the case, however, say a plea deal is better than nothing.

“While I personally would have preferred a more vigorous prosecution, a guilty plea to a felony is a serious step up” from a 2021 agreement between Boeing and the Justice Department, said Mark Lindquist, a lawyer who is suing Boeing on behalf of passengers who survived a scary 737 Max inciden t at the beginning of this year.

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The Justice Department first charged Boeing with fraud in January 2021 but agreed not to prosecute if the company paid a fine and followed other terms for three years. Then, seven weeks ago, the department said Boeing had violated the deferred prosecution agreement by failing to make changes to detect and prevent future violations of anti-fraud laws. Prosecutors have not publicly disclosed the alleged violations.

Here are some questions being asked about the case.

What is Boeing accused of?

The Justice Department wants Boeing to plead guilty to a single count of fraud for deceiving the Federal Aviation Administration about new flight-control software for the 737 Max and how much training pilots of older 737 models would need to safely fly the plane. In the 2021 settlement, Boeing blamed the deception on two low-level employees, one of whom was later acquitted after a trial in federal court.

Is Boeing likely to accept the plea offer?

The company isn’t saying. Lawyers for the victims’ families say the company would be crazy to reject it.

If Boeing takes the deal, it would plead guilty in what likely would be a very short court session. If it turns down the offer, the Justice Department is vowing to take the case to trial, which would expose more details of Boeing’s actions while it was asking the FAA to certify the Max.

Can a judge block the deal?

Yes. The plea and the sentence outlined by the Justice Department, including a $244 million fine and appointment of a monitor to oversee the agreement, would be filed in U.S. District Court in Fort Worth, Texas. If Judge Reed O’Connor accepts the agreement, he would not be able to change the terms approved by Boeing and the prosecutors.

If the judge rejects the plea deal, Boeing and the Justice Department could try to negotiate a new agreement or go to trial.

“The families will most certainly object before Judge Reed O’Connor and ask that he reject the plea if Boeing accepts,” said Robert Clifford, another lawyer for families of the Lion Air and Ethiopian Airlines crashes.

Would a guilty plea lead to more civil lawsuits against Boeing?

It would strengthen the hand of victims’ families who have not settled their pending lawsuits against the company. It is less clear whether survivors and heirs who already accepted settlements could file new claims.

Does the plea offer affect other investigations into Boeing?

It would only resolve the fraud charge filed after the two deadly crashes, which took place off the coast of Indonesia and in Ethiopia.

The Justice Department opened another investigation after a panel covering an unused emergency exit blew off a 737 Max during an Alaska Airlines flight in January; the FBI told passengers on that flight they might be victims of a crime. The National Transportation Safety Board and Federal Aviation Administration are conducting separate investigations into the blowout and Boeing’s manufacturing quality.

Is Boeing’s purchase of a key supplier related to its recent troubles?

Boeing announced Monday that it will pay $4.7 billion to acquire Spirit AeroSystems, which makes fuselages for the 737 Max, in an all-stock transaction. Fitch Ratings said the deal should help Boeing better control the pace of 737 Max production and will have no near-term effect on the company’s credit rating, although Boeing will take on about $3.6 billion in Spirit debt.

Will the acquisition improve safety?

Boeing once owned Spirit, and it believes that bringing the supplier back in-house will help it improve quality and ease safety concerns about its planes.

Manufacturing mistakes by suppliers can turn up in finished products. The Alaska Airlines blowout occurred after bolts were not reinstalled following a repair job at Boeing — workers had to fix rivets that were damaged when the fuselage arrived from Spirit — according to a preliminary report by the NTSB.

What are other potential implications of a Boeing plea?

A criminal conviction can jeopardize a company’s standing as a federal contractor, and Boeing is an important one. The company builds planes for the Defense Department and built a space capsule for NASA.

Joseph Facciponti, executive director of New York University’s law school program on corporate compliance and enforcement, said the plea could be written so that a Boeing subsidiary pleads guilty, allowing the rest of the company to avoid disbarment. However, in many cases agencies have discretion to avoid disbarring companies.

“I don’t think the government wants to lose the ability to contract with Boeing, so there is always the option for government agencies to allow a company that has been convicted of a crime like this to continue doing business with them,” Facciponti said.

The case against Boeing also may affect the Justice Department’s approach to entering into deferred prosecution agreements with other companies or individuals.

Peter Reilly, a law professor at Texas A&M University who has written about such agreements, also known as DPAs, says federal prosecutors have increasingly used them in recent years to settle serious allegations against companies while avoiding the expense and uncertain outcome of a trial.

A landmark case was the 2015 deal with General Motors over charges that the automaker broke the law by concealing a deadly problem with ignition switches in small cars, he said.

Congress approved DPAs as part of the Speedy Trial Act of 1974 to quickly handle cases involving low-level offenses and first-time offenders, Reilly said. He thinks the Boeing DPA was particularly weak and should lead Congress to crack down on their use.

“People are realizing, wow, this is what happens when Boeing admits to committing a very serious crime and 346 people die?” Reilly said.

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Cathy Bussewitz in New York contributed to this report.