Section 25.801

14 CFR Ch. I (1-1-19 Edition)

(1) The Director of the Federal Register approved the incorporation by reference of this document under 5 U.S.C.
552(a) and 1 CFR part 51.
(2) You may review copies of NIJ
Standard 0101.04 at the:
(i) National Institute of Justice
(NIJ), http://www.ojp.usdoj.gov/nij, telephone (202) 307-2942; or
(ii) National Archives and Records
Administration (NARA). For information on the availability of this material at NARA, call (202) 741-6030, or go
to
http://www.archives.gov/federal-register/cfr/ibr-locations.html.
(3) You may obtain copies of NIJ
Standard 0101.04 from the National
Criminal Justice Reference Service,
P.O. Box 6000, Rockville, MD 20849-6000,
telephone (800) 851-3420.
[Amdt. 25-127; 121-341, 73 FR 63879, Oct. 28,
2008, as amended at 74 FR 22819, May 15, 2009;
Amdt. 25-138, 79 FR 13519, Mar. 11, 2014; Doc.
No. FAA-2018-0119, Amdt. 25-145, 83 FR 9169,
Mar. 5, 2018]

EMERGENCY PROVISIONS

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Section 25.801

Ditching.

(a) If certification with ditching provisions is requested, the airplane must
meet the requirements of this section
and SectionSection 25.807(e), 25.1411, and 25.1415(a).
(b) Each practicable design measure,
compatible with the general characteristics of the airplane, must be taken to
minimize the probability that in an
emergency landing on water, the behavior of the airplane would cause immediate injury to the occupants or
would make it impossible for them to
escape.
(c) The probable behavior of the airplane in a water landing must be investigated by model tests or by comparison with airplanes of similar configuration for which the ditching characteristics are known. Scoops, flaps, projections, and any other factor likely to affect the hydrodynamic characteristics
of the airplane, must be considered.
(d) It must be shown that, under reasonably probable water conditions, the
flotation time and trim of the airplane
will allow the occupants to leave the
airplane and enter the liferafts required by Section 25.1415. If compliance with
this provision is shown by buoyancy
and trim computations, appropriate al-

lowances must be made for probable
structural damage and leakage. If the
airplane has fuel tanks (with fuel jettisoning provisions) that can reasonably
be expected to withstand a ditching
without leakage, the jettisonable volume of fuel may be considered as buoyancy volume.
(e) Unless the effects of the collapse
of external doors and windows are accounted for in the investigation of the
probable behavior of the airplane in a
water landing (as prescribed in paragraphs (c) and (d) of this section), the
external doors and windows must be
designed to withstand the probable
maximum local pressures.
[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as
amended by Amdt. 25-72, 55 FR 29781, July 20,
1990]

Section 25.803

Emergency evacuation.

(a) Each crew and passenger area
must have emergency means to allow
rapid evacuation in crash landings,
with the landing gear extended as well
as with the landing gear retracted, considering the possibility of the airplane
being on fire.
(b) [Reserved]
(c) For airplanes having a seating capacity of more than 44 passengers, it
must be shown that the maximum
seating capacity, including the number
of crewmembers required by the operating rules for which certification is
requested, can be evacuated from the
airplane to the ground under simulated
emergency conditions within 90 seconds. Compliance with this requirement must be shown by actual demonstration using the test criteria outlined in appendix J of this part unless
the Administrator finds that a combination of analysis and testing will
provide data equivalent to that which
would be obtained by actual demonstration.
(d)-(e) [Reserved]
[Doc. No. 24344, 55 FR 29781, July 20, 1990]

Section 25.807

Emergency exits.

(a) Type. For the purpose of this part,
the types of exits are defined as follows:
(1) Type I. This type is a floor-level
exit with a rectangular opening of not
less than 24 inches wide by 48 inches

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