帰還 きかん不能 ふのう限界 げんかい てんじゃありませんでした
kikanfunōgenka itenjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 帰還不能限界点

1. Was not the point of no return.; Was not an irreversible limit.

Past/Perfective
Negative
Polite
Terminal Form