14 CFR § 25.815 - Width of aisle.

---
identifier: "/us/cfr/t14/s25.815"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "14 CFR § 25.815 - Width of aisle."
title_number: 14
title_name: "Aeronautics and Space"
section_number: "25.815"
section_name: "Width of aisle."
chapter_name: "FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "C"
subchapter_name: "AIRCRAFT"
part_number: "25"
part_name: "AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 106(f), 106(g), 40113, 44701, 44702 and 44704; Pub. L. 115-254, 132 Stat 3281 (49 U.S.C. 44903 note)."
regulatory_source: "Docket No. 5066, 29 FR 18291, Dec. 24, 1964, unless otherwise noted."
cfr_part: "25"
---


# 25.815 Width of aisle.

The passenger aisle width at any point between seats must equal or exceed the values in the following table:

|  |  |  |
| --- | --- | --- |
| 10 or less | 12 | 15 |
| 11 through 19 | 12 | 20 |
| 20 or more | 15 | 20 |
| A narrower width not less than 9 inches may be approved when substantiated by tests found necessary by the Administrator. |  |  |

[Amdt. 25-15, 32 FR 13265, Sept. 20, 1967, as amended by Amdt. 25-38, 41 FR 55466, Dec. 20, 1976]