航空 こうくう 操縦 そうじゅう じゅつでしょう
kōkūkisōjū jutsudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 航空機操縦術

1. Probably piloting.; Probably aircraft operation.

Polite
Presumptive
Conjecture