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)
Passenger seating capacity	Less than 25 in. from floor	25 in. and more from floor
10 or less	1 12	15
11 through 19	12	20
Code of Federal Regulations 457
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.

Code of Federal Regulations

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