S25.30 Circulation Inside Cabin During Flight
ED Decision 2017/015/R
(a) Width of Aisle: for low-occupancy aeroplanes that have a passenger seating configuration of 19 or less, and for non-commercially operated aeroplanes, the design must be such that the dimensional requirements of CS 25.815 can be achieved during all flight phases, except that the width of aisle may be reduced to 0 m during in-flight operations provided that compliance with the following additional requirements is shown (See AMC to Appendix S, S25.30(a)):
(1) all
areas of the cabin must be easily accessible by passengers or crew in the
event of an emergency situation (e.g. in-flight fire, depressurisation);
(2) placard
instructions for restoring the aisle to the taxiing, take-off, and landing
configuration must be provided at the locations where the width of the cabin
aisle is reduced; and
(3) procedures
must be established and documented in the AFM for restoring the aisle width
for taxiing, take-off, and landing.
(b) Firm Handholds: in lieu of the requirements of CS 25.785(j), if the seat backs do not provide a firm handhold, there must be an acceptable means to enable persons to steady themselves while using the aisles in moderately rough air (See AMC to Appendix S, S25.30(b)).
[Amdt 25/19]
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