14 CFR § 33.4
Instructions for Continued Airworthiness
July 13, 2020
The applicant must prepare Instructions for Continued Airworthiness in accordance with appendix A to this part that are acceptable to the Administrator. The instructions may be incomplete at type certification if a program exists to ensure their completion prior to delivery of the first aircraft with the engine installed, or upon issuance of a standard certificate of airworthiness for the aircraft with the engine installed, whichever occurs later.
[Amdt. 33-9, 45 FR 60181, Sept. 11, 1980]