The difficulty and problem with all agencies. prepare with all line and spare parts network regularly when a problem can be solved and continue until finished.
The difficulties and problems that all departments. Everything always have to be prepared both on tools and spare parts. When the problem can be resolved and continue to work to finish the job.
The difficulties and problems that have all the units. To get everything ready always both tools and spare parts. When the problem can edit and continue to work to finish the job.