49 CFR 229.113 - Warning notice.
Whenever any steam generator has been shut down because of defects, a distinctive warning notice giving reasons for the shut-down shall be conspicuously attached near the steam generator starting controls until the necessary repairs have been made. The locomotive in which the steam generator displaying a warning notice is located may continue in service until the next periodic inspection.
Title 49 published on 2013-10-01
no entries appear in the Federal Register after this date.