14 CFR § 29.815 - Main aisle width.

---
identifier: "/us/cfr/t14/s29.815"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "14 CFR § 29.815 - Main aisle width."
title_number: 14
title_name: "Aeronautics and Space"
section_number: "29.815"
section_name: "Main aisle width."
chapter_name: "FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "C"
subchapter_name: "AIRCRAFT"
part_number: "29"
part_name: "AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY ROTORCRAFT"
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, 44704."
regulatory_source: "Docket No. 5084, 29 FR 16150, Dec. 3, 1964, unless otherwise noted."
cfr_part: "29"
---


# 29.815 Main aisle width.

The main passenger aisle width 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. |  |  |

[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as amended by Amdt. 29-12, 41 FR 55472, Dec. 20, 1976]