In practice, most rolling stock and locomotives went to the surface only for major maintenance.

He was responsible for all operations, ranging from major maintenance to cash control.

In 1980s planning for a major maintenance and modernization program began.

E656.032 was a well-kept unit, and underwent major maintenance just a few weeks before.

By 1980 it was obsolete and in need of major maintenance.

Over 50% of all Soviet tanks required major maintenance on June 22, 1941.

And none of this counts major deferred maintenance for the military.

It also functioned as a major maintenance and supply depot for both air forces.

The aircraft was manufactured in 1997 and received major maintenance this fall with no signs of any problems, an airline official said.

His administration has also taken on a major, five-year maintenance and construction effort to dramatically improve school buildings by 2014.