Regular maintenance is needed to ensure availability of technical services - and usually things do go well. But systems are increasingly complex and technicians are under great pressure to work more quickly; they have to deal with equipment of different types and ages.
We must be sensitive to the possibility of failure, warns Maria Kovacova in this HindSight article. She recommends timely coordination, clear communication and checklists to be used by technical experts and supervisors to help ensure that things go right.
And if things do go wrong, she points out, just culture should apply to technicians as well as controllers.