Reply to post: Re: A venerable workhorse

Oldest flying 747 finally grounded, 47 years after first flight

Bubba Von Braun

Re: A venerable workhorse

Same way they tested them in the beginning, lots of ground testing, taxi testing and then flight test. 747 had a wicked problem with the initial P&W JT9D-3's as the engine case deformed and caused blades to touch the case, never good thing. Fix was a revised engine mount.

Most twins especially the 767/777 have great single engine performance. Given your doing flight test in a lightly loaded aircraft I would expect a few more air-frames kicking around.


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