14 CFR · Part 29
14 CFR § 29.815
Main aisle width.
The main passenger aisle width between seats must equal or exceed the values in the following table:
| Passenger seating capacity | Minimum main passenger aisle width | |
|---|---|---|
| Less than 25 inches from floor (inches) | 25 Inches and more from floor (inches) | |
| 10 or less | 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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