Sec. 45.14 - Identification of critical
Each person who produces a part for which a replacement time, inspection interval, or related procedure is specified in the Airworthiness Limitations section of a manufacturer's maintenance manual or Instructions for Continued Airworthiness shall permanently and legibly mark that component with a part number (or equivalent) and a serial number (or equivalent).
[Amdt. 45-16, 51 FR 40703, Nov. 7, 1986]