Code of Federal Regulations

Title 14 - Aeronautics and Space
Volume: 1Date: 2024-01-01Original Date: 2024-01-01Title: Section 25.815 - Width of aisle.Context: Title 14 - Aeronautics and Space. CHAPTER I - FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION. SUBCHAPTER C - AIRCRAFT. PART 25 - AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES. Subpart D - Design and Construction. - Emergency Provisions.
§ 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 capacityMinimum passenger aisle width (inches)
Less than 25 in. from floor25 in. and more from floor
10 or less 1  12 15
11 through 19 12 20
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.
[Amdt. 25-15, 32 FR 13265, Sept. 20, 1967, as amended by Amdt. 25-38, 41 FR 55466, Dec. 20, 1976]