What the reviewed record shows
The federal emergency-engine rule has no hourly ceiling during a genuine emergency. It generally allows up to 100 hours per engine for maintenance and testing, with a restricted 50-hour non-emergency subset counted inside that 100. The application also proposes combined emission caps and hour-meter records. Ordinary bridge generation does not automatically become emergency operation.
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Source records
Last reviewed: August 31, 2026. Original records control.