片肺 かたはい飛行 ひこうではありませんでした
katahaihikōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 片肺飛行

1. Was not a one-lung flight.; Was not flying with only one lung.

Past/Perfective
Negative
Polite
Formal Register