Sec. 25.815 - Width of aisle.
The passenger aisle width at any point
between seats must equal or exceed the values in the following table:
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Minimum passenger
aisle width (inches)
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Passenger seating capacity Less than 25 in. and
25 in. more from
from floor floor
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10 or less...................................... \1\ 12 15
11 through 19................................... 12 20
20 or more...................................... 15 20
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\1\ A narrower width not less than 9 inches may be approved when
substantiated by tests found necessary by the Administrator.
[Amdt. 25-15, 32 FR 13265, Sept. 20, 1967, as
amended by Amdt. 25-38, 41 FR 55466, Dec. 20, 1976]