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Federal Aviation Regulations

Sec. 23.815 — Width of aisle.

(a) Except as provided in paragraph (b) of this section, for commuter category airplanes, the width of the main passenger aisle at any point between seats must equal or exceed the values in the following table:

Number of passenger seatsMinimum main passenger aisle width
Less than 25 inches from floor25 inches and more from floor
10 through 199 inches15 inches.

(b) When certification to the emergency exist provisions of §23.807(d)(4) is requested, the main passenger aisle width at any point between the seats must equal or exceed the following values:

Number of passenger seatsMinimum main passenger aisle width (inches)
Less than 25 inches from floor25 inches and more from floor
10 or fewer11215
11 through 191220

1A narrower width not less than 9 inches may be approved when substantiated by tests found necessary by the Administrator.

[Amdt. 23–34, 52 FR 1831, Jan. 15, 1987, as amended by Amdt. 23–46, 59 FR 25774, May 17, 1994]

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