AMC
25.807(e) Emergency Exits Uniformity
ED Decision 2017/015/R
FAA Advisory Circular 25.807-1 ‘Uniform Distribution of Exits’, dated
08/13/90 is accepted by EASA as providing acceptable means of compliance with
CS 25.807(e).
However, this Advisory Circular does not provide any guidance for those
aeroplanes required to have no more than one pair of emergency exits. For
those aeroplanes, ensuring that the seat-to-exit distance remains within
acceptable limits as per the following criteria provides an acceptable means
of compliance with CS 25.807(e).
Each passenger seat approved for use during taxiing, take-off or
landing should be located such that:
(i) it is
within 9.14 m (30 ft) from the nearest emergency exit on one side of the
fuselage, and within 13.72 m (45 ft) from the nearest emergency exit on the
other side of the fuselage; and
(ii) the
occupant of that seat has the possibility to move to an emergency exit, on the
left side, or the right side of the fuselage, whilst at all points along the
way remaining within 9.14 m (30 ft) from an emergency exit on one side of the
fuselage and within 13.72 m (45 ft) from an emergency exit on the other side
of the fuselage.
When calculating the distance from a passenger seat, or from any point
in the egress path of an occupant, to an emergency exit, this distance should
be taken as the total longitudinal distance (i.e. as measured parallel to the
aeroplane’s longitudinal axis) that the escapee should cover in order to get
to the emergency exit in question (i.e. the distance calculated should take
into account all required changes in direction of movement but measured only
longitudinally). For the distance from a passenger seat, as the starting
point, the front edge of the seat bottom cushion at the centreline, with the
seat in the taxiing, take off, and landing position is to be taken for seats
installed at any orientation. The end point in each case is to be taken as the
nearest edge of the emergency exit opening in the fuselage.
For aeroplanes with a passenger seating configuration of 19 or less, only one pair of emergency exits is required. However, such aeroplanes may have additional exits installed, which must then comply with CS 25.807(h) but not with the 18.3-m (60-feet) rule of CS 25.807(f)(4). The distance between each passenger seat and the nearest available emergency exit may be determined considering all available emergency exits, including the ones addressed by CS 25.807(h).
[Amdt 25/19]
EASA aircraft safety regulations for emergency exits require uniform distribution. For smaller planes with one exit pair, each seat must be within 9.14m (30ft) of an exit on one side and 13.72m (45ft) on the other, ensuring accessible escape routes. Additional exits on smaller planes need not comply with the 18.3m (60ft) rule.
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
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