> http://www.iflscience.com/space/breaking-virgin-galactic-s-spaceshiptwo-crashes-over-mohave-desert
>Earlier this year, Virgin Galactic reformulated the fuel in an effort to give the space plane more power. The motor has been through four powered flight tests before. This was a first test for the fuel mixture in a powered air test, though it had been tested many times on the ground with no problems.
>первое испытание в воздухе из четырех запланированных, наземные испытания прошли без проблем
не первое из четырех, а "двигатель прошел до этого четыре испытания в полете, это - первое испытание топливной смеси"
