Those lighted spars are pretty expensive. In the winter, after ice-in, they are much more exposed to random vandalism as well as being hit by vehicles. You'll occasionally see half a spar anyway. Their batteries only have a life-span of about a year anyway.
My expectation is that damaged nav-aids will not be immediatly replaced due to budget and inventory constraints. By taking them in for service during the period of diminished need, the MP maintenance crews are able to improve the safety of a greater number of people in the long run.
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