A new tech's first 90 days: what to learn first

Ninety days to make a new maintenance tech inspection-useful: life-safety items cold in month one, the top unit cites and their fixes in month two, documentation and pre-walk habits in month three. That is one sequence — post yours, including the first repair you let a new tech close alone and the one you never would.

The sequence in the opening post matches how I would build it: life-safety first, because those items cannot wait for a learning curve; then the high-frequency unit cites and their actual repairs; then the paperwork habits that make a fix count. The mistake I see most is teaching the whole book at once — a new tech who has been shown everything remembers nothing on the first solo walk. What's the first fix you trusted a new tech to close alone — and the one you still double-check every time?