At some point, Keldysh persuaded us to create a rotation of diagnostic maintenance shutdowns, isolating each in turn: cli-mate, navigation, communications, orbital tracking, plumbing, and so on.

NEWYORKER: Lostronaut

His mechanics now take each plane apart once a year for heavy maintenance.

FORBES: Lord Of The Warbirds

As each new market rises, the support, service and maintenance markets required to keep them running thrive as well.

FORBES: Alternative Energy: Creating Non-Exportable Jobs