The term ‘unobstructed’ should be interpreted as referring to the space between the adjacent wall(s) and/or seat(s), the seatback(s) being in the most adverse position, in vertical projection from floor -level to at least the prescribed minimum height of the exit.
The relevant parts of FAA Advisory Circular (AC) 25-17A Change 1, Transport Airplane Cabin Interiors Crashworthiness Handbook, dated 24.5.2016 are accepted by the Agency as providing acceptable means of compliance with CS 25.807.
Note: ‘The relevant parts’ means ‘the parts of the AC 25-17A Change 1 that address the applicable FAR/CS-25 paragraph’.
[Amdt 25/12]
[Amdt 25/19]
[Amdt 25/26]
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