YOU SAID:

I watched the plane ascend into the air

INTO JAPANESE

空気中に上昇する飛行機を見ていた

BACK INTO ENGLISH

Was watching the plane rose into the air

INTO JAPANESE

飛行機が空気中にバラを見ていた

BACK INTO ENGLISH

Had seen plane rose into the air

INTO JAPANESE

飛行機が空気中にバラを見ていた