14 CFR · Part 135
14 CFR § 135.425
Maintenance, preventive maintenance, and alteration programs.
Each certificate holder shall have an inspection program and a program covering other maintenance, preventive maintenance, and alterations, that ensures that—
Maintenance, preventive maintenance, and alterations performed by it, or by other persons, are performed under the certificate holder's manual;
Competent personnel and adequate facilities and equipment are provided for the proper performance of maintenance, preventive maintenance, and alterations; and
Each aircraft released to service is airworthy and has been properly maintained for operation under this part.
Referenced By
Interpretations of This Section (3)
Advisory Circulars (1)
Documents that cite this section, found in their catalog metadata or text. Listed by date, not by significance.
Reflects the eCFR edition current as of September 29, 2026. Retrieved from ecfr.gov on October 16, 2026.
Primary Source