14 CFR · Part 25
14 CFR § 25.815
Width of aisle.
The passenger aisle width at any point between seats must equal or exceed the values in the following table:
| Passenger seating capacity | Minimum passenger aisle width (inches) | |
|---|---|---|
| Less than 25 in. from floor | 25 in. and more from floor | |
| 10 or less | ¹ 12 | 15 |
| 11 through 19 | 12 | 20 |
| 20 or more | 15 | 20 |
¹ A narrower width not less than 9 inches may be approved when substantiated by tests found necessary by the Administrator.
Reflects the eCFR edition current as of September 29, 2026. Retrieved from ecfr.gov on October 16, 2026.
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