Originally Posted by
Pilot DAR
I opine that the test shown is a "if it can survive this, it can survive anything" type test. 'Doesn't mean it's the most graceful way to do it! And, test pilots tend to have unusually high skill and attention to task, so they can fly a crabbed, non stable approach, and still make a decent landing out of it. I've never read a Boeing 777 flight manual, but I would be surprised if the primary recommended procedure for a crosswind landing is to crab it on - But, not being a big airplane pilot, I defer to those who know!
See the excerpt from the B757/B767 Flight Crew Training Manual that was quoted a couple of posts earlier. The B777 FCTM is very similar. Doing a crabbed landing is just one available flight technique described by Boeing. Neither preferred, nor discouraged (unlike sideslip-only / zero crab landings, which Boeing do not recommend for crosswinds exceeding some value below max. demonstrated x-wind).