後方 こうほう らん気流 きりゅうじゃなかったです
kōhōrankiryūjanakattadesu

Noun
Desu Copula

The polite, past negative form of 後方乱気流

1. It wasn't rear turbulence.; It wasn't a disturbance from behind.

Past/Perfective
Negative
Polite
Casual Register