- Yakov Volkov
- Glagolev - Inventor
- Mariya Blyumental-Tamarina
- Glagolev's wife
- Boris Bylinkin
- Naleto-Shipulskiy - Pilot
- Asya Dodonova
- Irina - Pilot
- Boris Glagolev
- Boris - inventor's son - Pilot
- Pyotr Nartov-Kurkin
- Director of a Foreign Aircraft Plant
- V. Neverov
- Glagolev's father - General
- Yu. Shibanov
- Seryozha - Boris' brother
