Chicago Tribune (Sunday)

What to know as 737 Max readies for comeback

- By Mike Arnot

This past week, Boeing completed test flights of its troubled 737 Max airplane to demonstrat­e it can fly safely with new flight control software. The Max was grounded in March 2019 after two fatal crashes in Indonesia and Ethiopia killed 346 people.

Even as the company began testing the planes for recertific­ation, a federal inspector general’s report said Boeing had kept informatio­n from regulators about the flawed computer system that brought down the two jets during the plane’s initial approval process.

The Max is the most recent model of Boeing’s 737, a type of aircraft with many variants over the decades. More than 10,000 737s have been built.

If the Federal Aviation Administra­tion is convinced that Boeing has corrected the problems that led to the crashes, the planes will return to service, but no timeline has been announced.

The agency said in a statement that it “will lift the grounding order only after we are satisfied that the aircraft meets certificat­ion standards.”

Boeing’s chief executive, David Calhoun, flew on the plane in February. The head of the FAA and longtime Delta pilot, Stephen M. Dickson, told a Senate committee that he would fly the Max himself and must be satisfied that he would put his family aboard before he would lift the grounding order.

Industry experts said it could take several months before the agency and its counterpar­ts in Europe, Canada and Brazil give the green light to certify the Max — possibly as late as 2021.

All told, this likely means that the Max won’t return to service until this fall at the earliest.

Here’s what travelers contemplat­ing flying around that time need to know.

What happens when the FAA certifies the aircraft?

The airlines need to ready the planes and their pilots, and the FAA needs to approve a new training regime for pilots.

The grounded planes are parked at airplane storage facilities around the United States. They undergo periodic maintenanc­e even while grounded. When the FAA provides its approval, an airline’s maintenanc­e teams and pilots will fly the aircraft (with no passengers on board) to airline maintenanc­e facilities, said R. Eric Jones, an associate professor of Aviation Maintenanc­e Sciences at Embry Riddle Aeronautic­al University and an experience­d airline maintenanc­e lead. There, the aircraft will undergo extensive evaluation­s and maintenanc­e of systems, including hydraulics and avionics, and of the wings and landing gear. “Assuming no anomalies are found, it could take as little as two weeks to a month to return a parked Max to operationa­l service,” Jones said.

Boeing has recommende­d to the FAA that pilots undergo training on flight simulators combined with computer-based training “before returning the Max safely to service.” This training could be similar to the intense annual checks every airline pilot undergoes regardless of what aircraft they fly. It could take several days per pilot on a tablet, coupled with simulation of the new flight control system on a full-motion flight simulator. The details of the training have not been announced. Many pilots who fly the Max have trained on flight simulators every three months since the plane was grounded to maintain their knowledge of how it flies.

What airlines fly the Max?

Since it was introduced, Boeing has delivered 370 Max aircraft to 47 customers worldwide.

Southwest Airlines was the largest U.S. operator of the Max, with 34 in its fleet. American Airlines has 24 and United Airlines has 14. Delta Air Lines is the sole major U.S. carrier not to have ordered the jet to date. While the Max represents a small percentage of the fleets of these carriers, hundreds more were on order before the crashes.

Internatio­nally, dozens of airlines are slated to take delivery of the Max over the coming years.

With COVID-19 slowing airline travel, what’s the hurry?

The Max is about 17% more fuel-efficient than its older Boeing 737 siblings. The fuel savings are huge for cash-strapped airlines.

How can I tell when I’m booking whether the plane will be a Max?

When you book your ticket online, airlines display the type of aircraft slated to fly the route. You might have to click a link to reveal this informatio­n. For example, American Airlines previously listed the Max on its website booking page as the “7M8” aircraft, which stands for Boeing 737 MAX 8. (There are 7, 8, 9 and 10 numbered variants, depending on the seating capacity). Southwest has a webpage that lets you identify what plane you are scheduled to fly on.

Q: Has any other commercial aircraft been successful­ly rehabilita­ted?

A: Aviation authoritie­s grounded the Boeing 787 Dreamliner for four months in 2013 because of smoking lithium-ion batteries in two separate incidents. For a time, passengers were skittish about flying the thennew aircraft. That moment has long passed; the Dreamliner is key to many airlines’ internatio­nal routes. But the Dreamliner had not been involved in fatal crashes.

What routes does the Max normally fly?

The Max is the latest generation of Boeing’s 737, which was designed to fly medium-range flights. None fly trans-Atlantic.

How can I tell if I’m flying on a Max?

If you’re waiting at the gate and see your plane, look for large and pointy fins extending above and below the wingtips called winglets.

Will airlines allow me to rebook or get a refund if I don’t want to fly on the Max?

Rebook? Yes. Refund? No. U.S. carriers have not yet announced policies related to the return of service of the Max. However, in a statement this past week, to a United Airlines spokespers­on said that the company “will be transparen­t — and communicat­e in advance — with our customers who are booked to fly on a Max aircraft, will rebook those who do not want to fly on a Max at no charge.”

 ?? JASON REDMOND/GETTY-AFP ?? Crashes involving the 737 Max jet in Indonesia and Ethiopia in 2019 left 346 people dead.
JASON REDMOND/GETTY-AFP Crashes involving the 737 Max jet in Indonesia and Ethiopia in 2019 left 346 people dead.

Newspapers in English

Newspapers from United States