C.F.R. » Title 14 » CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION › SUBCHAPTER C—AIRCRAFT › PART 29—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY ROTORCRAFT › Subpart D—Design and Construction

14 C.F.R. § 29.815

Main aisle width

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

Passenger seating capacityMinimum main passenger aisle width
Less than 25 inches from floor (inches)25 Inches and more from floor (inches)
10 or less1215
11 through 191220
20 or more1520
1 A 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]