--- kind: "section" citation: "14 C.F.R. § 121.1115" title: "14" number: "121.1115" heading: "Limit of validity." url: "https://uscodex.org/cfr/14/121.1115" --- # §121.1115. Limit of validity. - (a) **Applicability.** This section applies to certificate holders operating any transport category, turbine-powered airplane with a maximum takeoff gross weight greater than 75,000 pounds and a type certificate issued after January 1, 1958, regardless of whether the maximum takeoff gross weight is a result of an original type certificate or a later design change. This section also applies to certificate holders operating any transport category, turbine-powered airplane with a type certificate issued after January 1, 1958, regardless of the maximum takeoff gross weight, for which a limit of validity of the engineering data that supports the structural maintenance program (hereafter referred to as LOV) is required in accordance with [§ 25.571](/cfr/14/25.571.md) or [§ 26.21](/cfr/14/26.21.md) of this chapter after January 14, 2011. - (b) **Limit of validity.** No certificate holder may operate an airplane identified in [paragraph (a)](#a) of this section after the applicable date identified in Table 1 of this section unless an Airworthiness Limitations section approved under Appendix H to [part 25](/cfr/14/part25.md) or [§ 26.21](/cfr/14/26.21.md) of this chapter is incorporated into its maintenance program. The ALS must— - (1) Include an LOV approved under [§ 25.571](/cfr/14/25.571.md) or [§ 26.21](/cfr/14/26.21.md) of this chapter, as applicable, except as provided in [paragraph (f)](#f) of this section; and - (2) **Be clearly distinguishable within its maintenance program.** - (c) **Operation of airplanes excluded from § 26.21.** No certificate holder may operate an airplane identified in [§ 26.21(g)](/cfr/14/26.21.md?p=g) of this chapter after July 14, 2013, unless an Airworthiness Limitations section approved under Appendix H to [part 25](/cfr/14/part25.md) or [§ 26.21](/cfr/14/26.21.md) of this chapter is incorporated into its maintenance program. The ALS must— - (1) Include an LOV approved under [§ 25.571](/cfr/14/25.571.md) or [§ 26.21](/cfr/14/26.21.md) of this chapter, as applicable, except as provided in [paragraph (f)](#f) of this section; and - (2) **Be clearly distinguishable within its maintenance program.** - (d) **Extended limit of validity.** No certificate holder may operate an airplane beyond the LOV, or extended LOV, specified in paragraph [(b)(1)](#b-1), (c), (d), or (f) of this section, as applicable, unless the following conditions are met: - (1) An ALS must be incorporated into its maintenance program that— - (i) Includes an extended LOV and any widespread fatigue damage airworthiness limitation items approved under [§ 26.23](/cfr/14/26.23.md) of this chapter; and - (ii) Is approved under [§ 26.23](/cfr/14/26.23.md) of this chapter. - (2) The extended LOV and the airworthiness limitation items pertaining to widespread fatigue damage must be clearly distinguishable within its maintenance program. - (e) **Principal Maintenance Inspector approval.** Certificate holders must submit the maintenance program revisions required by paragraphs [(b)](#b), [(c)](#c), and [(d)](#d) of this section to the Principal Maintenance Inspector for review and approval. - (f) **Exception.** For any airplane for which an LOV has not been approved as of the applicable compliance date specified in [paragraph (c)](#c) or Table 1 of this section, instead of including an approved LOV in the ALS, an operator must include the applicable default LOV specified in Table 1 or Table 2 of this section, as applicable, in the ALS. ## Notes ### Amendments [Docket FAA-2006-24281, 75 FR 69785, Nov. 15, 2010, as amended by Amdt. 121-360, 77 FR 30878, May 24, 2012; Admt. 121-360A, 77 FR 55105, Sept. 7, 2012; Docket FAA-2022-1355, Amdt. 121-387, 87 FR 75847, Dec. 9, 2022] ### Source Source: Amdt. 121-336, 72 FR 63411, Nov. 8, 2007, unless otherwise noted. ### Authority Authority: 49 U.S.C. 106(f), 40103, 40113, 40119, 41706, 42301 preceding note added by Pub. L. 112-95, sec. 412, 126 Stat. 89, 44101, 44701-44702, 44705, 44709-44711, 44713, 44716-44717, 44722, 44729, 44732; 46105; Pub. L. 111-216, 124 Stat. 2348 (49 U.S.C. 44701 note); Pub. L. 112-95, 126 Stat. 62 (49 U.S.C. 44732 note); Pub. L. 115-254, 132 Stat. 3186 (49 U.S.C. 44701 note). ### Amendments [Docket FAA-2006-24281, 75 FR 69785, Nov. 15, 2010, as amended by Amdt. 121-360, 77 FR 30878, May 24, 2012; Admt. 121-360A, 77 FR 55105, Sept. 7, 2012; Docket FAA-2022-1355, Amdt. 121-387, 87 FR 75847, Dec. 9, 2022]