Michael Stumo and his wife Nadia Milleron, parents of Samya Rose Stumo, who was killed when Ethiopian Airlines Flight ET302 crashed, listen to testimony during a House Transportation and Infrastructure Committee hearing on Capitol Hill June 19, 2019 in Washington, DC.

Editor’s Note: Nadia Milleron lives in Sheffield, Massachusetts. Her daughter was killed in the March 10 crash of Ethiopian Airlines Flight 302. The opinions expressed in this commentary are her own.

My daughter, Samya Rose Stumo, was killed in the March 10 crash of Ethiopian Airlines Flight 302. She was sitting in seat 16J, in the middle of the plane. She was 24 years old.

Losing Samya has been horrific for my family and me. But our experience is multiplied 156 times over for the other victims who lost wives, children, fathers and entire families.

People around the world have a stake in what happened to that flight since they regularly rely on an airline industry that still faces troubling safety issues. More work must be done to ensure others won’t face the same grief and loss that my family now copes with each day. The US Federal Aviation Administration (FAA) approves planes for flight in the United States, and aviation authorities across the world follow its lead. The FAA must keep unsafe planes on the ground until every possible step has been taken to assure their airworthiness.

My daughter was on that plane because she was flying from Ethiopia to Kenya for her first assignment with a health systems development organization. She boarded a Boeing 737 Max 8, the same model of aircraft that crashed Oct. 29, 2018, in the Java Sea off the coast of Indonesia.

In both cases, the airplanes behaved erratically after take-off, with sensors delivering conflicting information about the plane’s flying position. We know that my daughter’s plane dived at least three separate times, despite the pilots’ best efforts to regain control. The plane eventually plunged into the ground at a 40-degree angle while traveling nearly 600 miles per hour.

Samya Rose Stumo, Michael Stumo, Nadia Milleron, Tor Stumo and Adnaan Stumo

Investigations since the crash have revealed that a sensor sent erroneous information to the plane’s flight control system. This is similar to what happened in the Lion Air crash in Indonesia — and prompted governments around the world to ground the Max.

Boeing’s then-CEO Dennis Muilenburg has said that he is “sorry for the lives lost.” And Boeing said it completed a software update for the Max, though it has since discovered another software glitch, among other issues.

What concerns me is Boeing’s haste to get the Max airborne again. The FAA is expected to allow the Max to fly again once it deems the planes safe.

Boeing knew about serious problems months before the Ethiopian and Lion Air plane crashes. Yet they did nothing. We can’t trust them after that.

As far back as 2017, Muilenburg was praising the FAA’s “streamlined” certification process, which originally helped get the Max finished as fast as possible. This should trouble anyone who flies. Are these planes being adequately tested? Will the Max be rushed back into service before it is safe?

Approval for the Max should wait until all relevant investigations have been completed, including a grand jury investigation conducted by the US Department of Justice.

Congress has held several hearings about the 737 Max. Elected officials asked many tough questions of Boeing officials and safety experts regarding the processes, investigations and testing needed to prevent future accidents. Some victims’ families were allowed to testify at one of these hearings, since they are the most deeply affected. My husband and I attended every hearing, seated beside other family members as we listened often through tears. None of it was comforting.

We want to make sure people are warned about unsafe airplanes. And we want the FAA to keep planes grounded until every investigation is finished. We want to know if the new Boeing CEO David Calhoun will be receiving a bonus if the 737 Max is ungrounded and returns to the skies. Such efforts should not be rewarded. Muilenburg did not receive severance but left the company with stock options and other assets worth about $80 million, despite him suggesting he would not keep any stock or bonus money for 2019. All of the families combined were offered a total of $50 million from Boeing so far, or about $144,500 each.

Sadly, we have returned to the crash site in Ethiopia on the one-year anniversary. We are joined by hundreds of other family members and friends to remember all that was good about every person on that plane — one was as young as nine months old. We are working to have a memorial built at the crash site so that the victims will forever be remembered at what became their burial ground in that field outside of Addis Ababa.

None of this will bring our daughter back. But we want to help prevent others from being killed.

This piece has been updated.