Video: The Boeing 777X Completes Rejected Take Off

Boeing has been putting the new Boeing 777X test aircraft through its paces, taking off and landing multiple times in different conditions to ensure that the new prototype can perform as designed. One of these tests is the ‘wheel braking trial’, to see if this huge airframe can stop during an aborted takeoff.

Boeing has just tested the brakes of the 777X. Photo: Boeing

What is the testing process for the 777X?

If you don’t know, the Boeing 777X is the new version of the Boeing 777 line, much like the different versions of the Boeing 737 and 747. There are actually two variants of aircraft:

  • The 777-8 can carry 384 passengers in two classes to a range of 8,730 nautical miles / 16,170 km
  • The 777-9 can carry 426 passengers in two classes to a range of 7,285 nautical miles / 13,500 km

The different versions are designed for different routes, which you can read about here.


So far, Boeing has only built one Boeing 777X test aircraft, a 777-9 tail number WH001, which is being used for electronics, taxi tests, and first flight. After the first flight, the aircraft will be used to check avionics and related system, brakes, flutter, icing, stability, control, and low-speed aerodynamics post flying.


There will be another three other identical Boeing 777-9 aircraft built, WH002 to test auto-landing, ground effects, stability, and controls. WH003 to test auxiliary power unit, avionics, flight loads and propulsion performance. Finally, WH004 will test the environmental control systems, extended twin-engine operations, noise, and general functionality and reliability.

None of these aircraft have anything even resembling a passenger plane onboard. They don’t have seats, they don’t have cabins or even bathrooms. They are purely hollow shells designed to test all the functional parts of the airframe. They are loaded with heavy weights, however (likely water), to simulate a full load of passengers and cargo. But we can’t say for sure if they are fully loaded in fuel as they are not performing any long-distance flying (that test is sure to come).

Boeing 777X test flight getty images
Boeing will need thousands of hours of test flights before the aircraft is ready to go. Photo: Getty

What happened in today’s test?

At the Boeing test runway in Washington state, the brand new Boeing 777X performed an abort takeoff test.

The aircraft powered up both GE9X engines and powered up the runway to reach a speed that would be close to required to begin lifting off. The pilots then slammed on the brakes and caused the aircraft to come to a halt.

You can watch the video below.

We caught the #Boeing 777x performing a rejected takeoff test demonstrating acceleration, and then abruptly stopping the plane using brakes only.

Posted by The Museum of Flight on Tuesday, March 10, 2020

Judging by the video the pilots did not engage reverse thrusts and purely wanted to ensure that the brakes could stop the plane themselves. Also right at the end of the clip, you may see a tire burst.

What is the next test?

Boeing has been reluctant to reveal any details of its testing process and when exactly each airframe will be tested and for what. The company said it did not want to rush certification, especially in light of the re-certification of the Boeing 737 MAX.

“We’re taking the lessons learned from the 737 MAX and applying them to the 777X to ensure we are as prepared as possible for 777X certification,” Boeing said to FlightGlobal “Given the unknowns around development programs, as well as the certification process, we do not want to be overly specific about hours of testing or timing.”

The next tests likely are shorter runway stops when landing, and aborting landing tests. Additionally, Boeing will need to do cold-weather tests, high altitude landing/take-off (such as conditions at Mexico City airport), hot weather and long-distance flying.

But optimists in us believe that if all goes well, we should be flying on the Boeing 777X by next year.

What do you think of these tests? Let us know in the comments.


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Where is the video?


brakes, not breaks. at lease here in America, lol.


EASA will never grant certification.

John Hogan

That’s not a full test… that didn’t even get close to take of speed. In the full test the brakes are red hot and tyre b**w out plugs will pop.

Tony Mccurdy

Robert, well done smart guy showing the different spellings of breaks . how about
“ lease “ you s*****d up yourself,buddy be careful when you criticize


If all tests successfull, Somalia will order five aircraft of this type 777X insha Allah.


Those engines are huge. And noisy.

Old guy

Much the same as the 747 flight test program I was part of back in 1969. Did fully loaded landings and full brakes no t****t reversers without flaring three times in a row down in New Mexico. They were touch and go landings.

B. Thomas Marking

I don’t care how big or efficient they make it, if it doesn’t have two armrests for each passenger. Is it going to take an act of Congress to make Boeing do the right thing for its clients?

Dave D

That’s speed is nowhere near rotate speed. Look at how little runway is used.
The machine however sounds fantastic.


Over rotating on takeoff or landing are potential problems with that long fuselage. Poorly trained crews, like the 777 crew who hit the breakwater at SFO will be a problem.

NoCO resident

Can not find video.


The video is cut short just as a tyre sounds like it has blown out


What the h**l, they can’t get ABS to work?
I didn’t think popping tires on a low speed RTO is acceptable.


They can’t get ABS to work?
I didn’t think popping tires on a low speed RTO is acceptable.


Sounds like they popped a tire.

John Wiechmann

I think it is great BUT, the 737 incidence will forever shadow Boeing’s reputation. Sad but that is human nature. I’m going to Wal-Mart and buy 100 rolls of toilet paper.


I thought the rejected take-off test involved going to V1 fully loaded and then stopping using nothing but wheel brakes? This is not that test.


I have lost any faith I had in ANY Boeing product. They even s*****d up their Starliner after all of the publicity surrounding their 737 disasters. I would have thought that ten or more technicians would have checked every nut, bolt, s***w, washer, and wire and that the programming would… Read more »

Paul Proctor

Technically correct but slightly misleading headline. This wasn’t a full RTO test, as at least one comment noted. To the double-armrest comment: The airlines provide the seating and configure the interior, not Boeing, although Boeing may set limits where bulkheads and monuments may be placed.


I am optimistic. All the best Boeing 777X

Edward Francis

I believe the RTO test requires that the throttle be cut, brakes applied, with no reverse t****t. This simulates an RTO after engine failure. Tires commonly fail, but the criteria is that the aircraft must be safe for evacuation for several minutes after coming to a safe halt.


Seems to me like a test failure. A tire burst? Was the anti-skid not working? This test being a failure might explain why the video isn’t on their YouTube page.


Seems to me like a test failure. A tire burst? Was the anti-skid not working? This test being a failure might explain why the video isn’t on their YouTube page.

Richard B LeMay

They are interesting to me since i was an aircraft instrument technician in the air force.


The tests are mandatory and safety being paramount, is good. Keep on Boeing, the aircraft is superb.

Aniello Saggese

Good job. Text clear and informative.

Aniello Saggese

Good job. The text clear and informative. I am sure Boeing now is testing is 777 airplane carefully because they cannot have another problem like the 737max.

rick o shea

good ,test the s**t out of it , and then test it some more

Dr Ali Ewais

The B 777x is great invention and will benefit the earned good reputation the B777 achieved like the safety record and there liability
It will also best replacement of A 380 who vanished soon


I’ve been on a 777 during an aborted take off and that test was nothing like it. We were at full take off speed and 1/2+ down the runway. Just saying that test doesn’t reflect a real aborted take off.

Sam Di

Glad she passed the test but I’ve never heard engines whine like that. A first for me.


There is nothing I can see wrong with the 737max because the737 is the bestselling series of boeing I think that the 777x will be extraordinary and have no faults


This was just the first of many brake (ing) tests. More to follow!
Pull-up the 777-200 brake tests, when BAC was doing them for certification. About 1/2-1 hr video in desert, high OAT testing and cold wx testing, along with watered-down runway testing. Pretty impressive!


@ Edward Francis – love your posting mate. I had a good chuckle , I read it twice ,then as their names sank in I belted out HAHAHAA 😅😆😅. 👍.


I will still never fly Boing again..🤔👎

Adam Jackson

lol it sounded like a tire blew at the end(I know it didn’t happen) 😀