The client provided outdated 60-Day and Annual inspection guides for locomotive cab signals, both inconsistent with 49 CFR §236.
Annual inspections aren’t defined in FRA regulations and duplicated 60-Day content.
Instructions were vague, visually sparse, and error-prone for new technicians.
The final document became the standard procedure used by technicians to complete FRA-mandated cab signal inspections on MP36PH-3C locomotives.