Testing 1, 2, 3

Imagine this. Two new high profile airplanes in flight test at the same time. 9 or 10 airplanes involved. Yes, that would be a sight to see.

Actually you don’t have to imagine it. We did see something similar when we flight tested both the 757 and 767 at the same time back in 1982. I remember it vividly. I recall how quiet the 757 was in flight, and how we sent the 767 on an international demonstration flight that year.

Well, get ready for simultaneous flight tests once more. If you’ve been following the development of the 747-8 and 787 Dreamliner, you realize that their flight test programs are converging, and we’ll soon have both under way.


The last time major flight test programs overlapped - 757 and 767 - between February and July 1982.

One notable difference this time around is that we’ll be doing simultaneous flight tests with two widebody airplanes. So, with the overlap in the 747-8 and 787 flight test programs there’s isn’t the room to perform both at once from our Puget Sound field locations. But we’ve worked out a good plan with the Boeing Test and Evaluation team to make the most efficient use of our resources, while accommodating the test, certification and delivery schedules for both the 747-8 Freighter and the 787 Dreamliner.

We took a look at several ideas and concluded that the way to do this is to take advantage not only of the traditional resources in the Seattle area, but also other locations.

So, the 787 Dreamliner flight test program will be based at Boeing Field while the flight testing for airplanes 1, 2, and 3 for the 747-8 program will be conducted at “remote” sites.

The plan calls for operating the 747-8 Initial Airworthiness testing out of Moses Lake, in central Washington state where there’s a large airfield often used for testing and training. We can also perform limited testing on two of the three 747-8 test airplanes at Boeing Field during this time without impacting the ramp-up of the 787 test fleet.


The 3 flight test 747-8 Freighters are nearing completion in final assembly.

After Initial Airworthiness is achieved on the 747-8, the remainder of the flight test program for that airplane will move to another large airfield, in Palmdale, in Southern California. We’ll deploy Puget Sound test and program personnel to Palmdale to support the operations there.

Clearly, coordinating and completing the multiple flight testing activities for 9 airplanes - six 787 Dreamliner flight test airplanes and three 747-8 flight test airplanes – will require the use of remote locations. This also provides us the unique conditions we need for certain key tests such as hot or cold temperatures, calm weather, and high wind conditions.

We think that about 50% of the total flight test program hours - for both the 787 and 747-8 Freighter - will take place at a variety of remote locations that have these unique conditions.

This is a big challenge. But as I mentioned, we’ve done simultaneous flight test programs before, and we don’t see it impacting schedules. This plan - including moving the 747-8 Freighter to remote locations - will allow us to accommodate the schedule and resource requirements of both programs.


The Ground Vibration Test (GVT) is underway in the factory in the run-up to 747-8 flight test. GVT simulates vibrations and responses the airplane will experience in the air and helps clear the way for high speed flight testing.

All of the technical details aside, for those of us who love aviation, the next several months are truly going to be exciting and historic times for Boeing and our industry as the world’s two newest commercial airplanes take to the skies for the first time.

Comments (12)

P.Sumantri (France):

If you have the opportunity to go under the belly of this 747-8 during the early stage of the GVT, please do it. It's very interesting to see how an aircraft vibrates from that very specific position, especially for the first ten or so vibration modes. I did it twice myself (not vibrating but standing under the belly of an aircraft during a GVT).

Matthew Robertson (Winnipeg,Manitoba, Canada):

I am very happy to see that the two planes are well on their way into mass production. It is also a great pleasure of mine to be alive during such times of innovation and historic significance to the field of aviation. I am aware that these flight tests are to begin in the next couple of months, my only question is can you comment further on any specific date these tests may occur?

P.S. thank you for keeping an up to date journal for the interested parties.

alexandar (oakland):

I hope it is for real this time.

Ankih Fre (Seattle Washington):

Thanks for the update. Hows the 747-8 coming along? When will it get out of the factory. Hopefully Boeing has not paused or slowed down the testing after the delay?

Norman (Long Beach, California, United States):

Boeing has a good history of "multitasking" aircraft development, the quality of the product remains as high as it it was developed alone. The 767 and the 757 in and around the same time, the 777 and the 747-400 cargo where developed around the same time and the original 747 and the 737 where not very far apart.

Daniel Tsang (Hong Kong):

Will there be any demonstration plan for the 787 like those conducted for the 777-300ER flight test program?

I think a overseas demonstration will further prove the 787's superior performance to its existing as well as potential customers~!

Thiaga (Kuala Lumpur, Malaysia):

There is always a reason for a delay, and I'm sure that Boeing will get it through with flying colors for the betterment of the Company. Signing off with Best wishes!

Emil M. Hitt (hazelwood, missouri):

Thanks for the updates and insights into the happenings of both of these new aircraft.

I have two wishes for you, one continued success with both programs and a smooth ride into production.

The second is that you can find the time to bring one or both of these aircraft to St.Louis, as we are a part of the team that never sees this part of the company and products.

SuperSean (SFO/UIO/MIA):

Thanks for sharing this update... for us aviation buffs, it would be great if you could provide us with a technical details recap after major testing accomplishments!

Kevin (Los Angeles, CA):

I am another aviation buff who can't wait to see these planes take to the skies.

BTW, the Moses Lake link shows a JAL 744. So JAL still does its pilot training there?

Decades ago, I read about JAL pilots being impressed by the super friendly control tower as they practiced touch-and-go. As it turned out, a full landing fee was being charged every time the wheels touched the runway. :-)

James (Honolulu, Hawaii):

Could you hold off on talking about flight testing until the airplanes are actually ready? Just saying. It is nearly 2.5 years since that auspicious 7/8/07 rollout and it's been nothing but bad news.

Paulo M (Johannesburg, RSA):

I certainly look forward to seeing those two beauties in the air. As always, this is the point in aircraft development where any gaps between the Style of sales and the Substance of engineering is closed. As can be seen from the recent past, that's a very exciting time. Good luck and best wishes.

Post a comment

We welcome your comments. However all comments are moderated and may not post immediately. Offensive or off-topic comments will not be posted. We will not treat any comments you submit as confidential information. Please do not submit comments that contain any confidential information belonging to anyone else.

By submitting a comment to Randy's Journal, you agree to our site terms and privacy policy, and to having your name displayed with your comment. All or part of your comment may be posted or cited in the blog. Your name and personal information will not be used for any other purpose, and we will not publish your e-mail address.


More posts