---
kind: "section"
citation: "14 C.F.R. § 135.169"
title: "14"
number: "135.169"
heading: "Additional airworthiness requirements."
url: "https://uscodex.org/cfr/14/135.169"
---

# §135.169. Additional airworthiness requirements.

- (a) Except for commuter category airplanes, no person may operate a large airplane unless it meets the additional airworthiness requirements of §§ [121.213 through 121.283](/cfr/14/121.213..121.283.md) and [121.307](/cfr/14/121.307.md) of this chapter.
- (b) No person may operate a small airplane that has a passenger-seating configuration, excluding pilot seats, of 10 seats or more unless it is type certificated—
  - (1) In the transport category;
  - (2) Before July 1, 1970, in the normal category and meets special conditions issued by the Administrator for airplanes intended for use in operations under this part;
  - (3) Before July 19, 1970, in the normal category and meets the additional airworthiness standards in Special Federal Aviation Regulation No. 23;
  - (4) In the normal category and meets the additional airworthiness standards in appendix A;
  - (5) In the normal category and complies with [section 1](/cfr/14/1.md).(a) of Special Federal Aviation Regulation No. 41;
  - (6) In the normal category and complies with [section 1](/cfr/14/1.md).(b) of Special Federal Aviation Regulation No. 41;
  - (7) In the commuter category; or
  - (8) In the normal category, as a multi-engine certification level 4 airplane as defined in [part 23](/cfr/14/part23.md) of this chapter.
- (c) No person may operate a small airplane with a passenger seating configuration, excluding any pilot seat, of 10 seats or more, with a seating configuration greater than the maximum seating configuration used in that type airplane in operations under this part before August 19, 1977. This paragraph does not apply to—
  - (1) An airplane that is type certificated in the transport category; or
  - (2) **An airplane that complies with—**
    - (i) Appendix A of this part provided that its passenger seating configuration, excluding pilot seats, does not exceed 19 seats; or
    - (ii) **Special Federal Aviation Regulation No.** 41.
- (d) **Cargo or baggage compartments—**
  - (1) After March 20, 1991, each Class C or D compartment, as defined in [§ 25.857](/cfr/14/25.857.md) of [part 25](/cfr/14/part25.md) of this chapter, greater than 200 cubic feet in volume in a transport category airplane type certificated after January 1, 1958, must have ceiling and sidewall panels which are constructed of:
    - (i) Glass fiber reinforced resin;
    - (ii) Materials which meet the test requirements of [part 25](/cfr/14/part25.md), appendix F, part III of this chapter; or
    - (iii) **In the case of liner installations approved prior to March 20, 1989, aluminum.**
  - (2) For compliance with this paragraph, the term “liner” includes any design feature, such as a joint or fastener, which would affect the capability of the liner to safely contain a fire.

## Notes

### Amendments

[Docket 16097, 43 FR 46783, Oct. 10, 1978, as amended by Amdt. 135-2, 44 FR 53731, Sept. 17, 1979; Amdt. 135-21, 52 FR 1836, Jan. 15, 1987; 52 FR 34745, Sept. 14, 1987; Amdt. 135-31, 54 FR 7389, Feb. 17, 1989; Amdt. 135-55, 60 FR 6628, Feb. 2, 1995; Docket FAA-2015-1621, Amdt. 135-136, 81 FR 96701, Dec. 30, 2016]

### Authority

Authority: 49 U.S.C. 106(f), 40113, 41706, 44701-44702, 44705, 44709, 44711-44713, 44715-44717, 44722, 44730, 45101-45105; Pub. L. 112-95, 126 Stat. 58 (49 U.S.C. 44730).

### Source

Source: Docket 16097, 43 FR 46783, Oct. 10, 1978, unless otherwise noted.

### Amendments

[Docket 16097, 43 FR 46783, Oct. 10, 1978, as amended by Amdt. 135-2, 44 FR 53731, Sept. 17, 1979; Amdt. 135-21, 52 FR 1836, Jan. 15, 1987; 52 FR 34745, Sept. 14, 1987; Amdt. 135-31, 54 FR 7389, Feb. 17, 1989; Amdt. 135-55, 60 FR 6628, Feb. 2, 1995; Docket FAA-2015-1621, Amdt. 135-136, 81 FR 96701, Dec. 30, 2016]