---
kind: "section"
citation: "14 C.F.R. § 129.109"
title: "14"
number: "129.109"
heading: "Supplemental inspections for U.S.-registered aircraft."
url: "https://uscodex.org/cfr/14/129.109"
---

# §129.109. Supplemental inspections for U.S.-registered aircraft.

- (a) **Applicability.** This section applies to U.S.-registered, transport category, turbine powered airplanes with a type certificate issued after January 1, 1958 that as a result of original type certification or later increase in capacity have—
  - (1) A maximum type certificated passenger seating capacity of 30 or more; or
  - (2) **A maximum payload capacity of 7,500 pounds or more.**
- (b) **General requirements.** After December 20, 2010, a certificate holder may not operate an airplane under this part unless the following requirements have been met:
  - (1) **Baseline Structure.** The certificate holder's maintenance program for the airplane includes FAA-approved damage-tolerance-based inspections and procedures for airplane structure susceptible to fatigue cracking that could contribute to a catastrophic failure. For the purpose of this section, this structure is termed “fatigue critical structure.”
  - (2) **Adverse effects of repairs, alterations, and modifications.** The maintenance program for the airplane includes a means for addressing the adverse effects repairs, alterations, and modifications may have on fatigue critical structure and on inspections required by [paragraph (b)(1)](#b-1) of this section. The means for addressing these adverse effects must be approved by the responsible Aircraft Certification Service office.
  - (3) **Changes to maintenance program.** The changes made to the maintenance program required by paragraph [(b)(1)](#b-1) and [(b)(2)](#b-2) of this section, and any later revisions to these changes, must be submitted to the Principal Maintenance Inspector for review and approval.

## Notes

### Amendments

[Docket FAA-1999-5401, 70 FR 5532, Feb. 2, 2005. Redesignated by Amdt. 129-43, 72 FR 63413, Nov. 8, 2007; Amdt. 129-44, 72 FR 70508, Dec. 12, 2007; Docket FAA-2018-0119, Amdt. 129-53, 83 FR 9174, Mar. 5, 2018]

### Authority

Authority: 49 U.S.C. 1372, 40113, 40119, 44101, 44701-44702, 44705, 44709-44711, 44713, 44716-44717, 44722, 44901-44904, 44906, 44912, 46105, Pub. L. 107-71 sec. 104.

### Source

Source: Docket 1994, 29 FR 1720, Feb. 5, 1964, unless otherwise noted.

### Amendments

[Docket FAA-1999-5401, 70 FR 5532, Feb. 2, 2005. Redesignated by Amdt. 129-43, 72 FR 63413, Nov. 8, 2007; Amdt. 129-44, 72 FR 70508, Dec. 12, 2007; Docket FAA-2018-0119, Amdt. 129-53, 83 FR 9174, Mar. 5, 2018]