 |
| English | Russian |
| hours in service | наработка (Remove and replace magnesium tail booms with more than 400 hours time in service on the effective date of this AD within 100 further hours in service. Alexander Demidov) |
| hours in service | реальная наработка (Alexander Demidov) |
| hours of service | рабочие часы (Alex Lilo) |
| hours of service | часы работы (ART Vancouver) |
| service hours | наработка (Alexander Demidov) |
| service hours | время наработки (By July 1961, the locomotives had accumulated 400,000 engine service hours. Alexander Demidov) |
| service hours | моторесурс работы (Alexander Demidov) |
| total hours in service | суммарная наработка (Alexander Demidov) |