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

Open 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

1A 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]


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