慣熟 かんじゅく飛行 ひこうではありませんでした
kanjukuhikōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 慣熟飛行

1. Was not a familiar flight.; Was not a routine flight.

Past/Perfective
Negative
Polite
Formal Register