762 

14 CFR Ch. I (1–1–14 Edition) 

§ 29.801 

(1) Be positioned so that if the con-

tents break loose they are unlikely to 
cause injury to the occupants or re-
strict any of the escape facilities pro-
vided for use after an emergency land-
ing; or 

(2) Have sufficient strength to with-

stand the conditions specified in 
§ 29.561, including the means of re-
straint and their attachments required 
by paragraph (b) of this section. Suffi-
cient strength must be provided for the 
maximum authorized weight of cargo 
and baggage at the critical loading dis-
tribution. 

(d) If cargo compartment lamps are 

installed, each lamp must be installed 
so as to prevent contact between lamp 
bulb and cargo. 

[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as 
amended by Amdt. 29–12, 41 FR 55472, Dec. 20, 
1976; Amdt. 29–31, 55 FR 38966, Sept. 21, 1990] 

§ 29.801

Ditching. 

(a) If certification with ditching pro-

visions is requested, the rotorcraft 
must meet the requirements of this 
section and §§ 29.807(d), 29.1411 and 
29.1415. 

(b) Each practicable design measure, 

compatible with the general character-
istics of the rotorcraft, must be taken 
to minimize the probability that in an 
emergency landing on water, the be-
havior of the rotorcraft would cause 
immediate injury to the occupants or 
would make it impossible for them to 
escape. 

(c) The probable behavior of the 

rotorcraft in a water landing must be 
investigated by model tests or by com-
parison with rotorcraft of similar con-
figuration for which the ditching char-
acteristics are known. Scoops, flaps, 
projections, and any other factors like-
ly to affect the hydrodynamic charac-
teristics of the rotorcraft must be con-
sidered. 

(d) It must be shown that, under rea-

sonably probable water conditions, the 
flotation time and trim of the rotor-
craft will allow the occupants to leave 
the rotorcraft and enter the liferafts 
required by § 29.1415. If compliance with 
this provision is shown by bouyancy 
and trim computations, appropriate al-
lowances must be made for probable 
structural damage and leakage. If the 
rotorcraft has fuel tanks (with fuel jet-

tisoning provisions) that can reason-
ably be expected to withstand a ditch-
ing without leakage, the jettisonable 
volume of fuel may be considered as 
bouyancy volume. 

(e) Unless the effects of the collapse 

of external doors and windows are ac-
counted for in the investigation of the 
probable behavior of the rotorcraft in a 
water landing (as prescribed in para-
graphs (c) and (d) of this section), the 
external doors and windows must be 
designed to withstand the probable 
maximum local pressures. 

[Amdt. 29–12, 41 FR 55472, Dec. 20, 1976] 

§ 29.803

Emergency evacuation. 

(a) Each crew and passenger area 

must have means for rapid evacuation 
in a crash landing, with the landing 
gear (1) extended and (2) retracted, con-
sidering the possibility of fire. 

(b) Passenger entrance, crew, and 

service doors may be considered as 
emergency exits if they meet the re-
quirements of this section and of 
§§ 29.805 through 29.815. 

(c) [Reserved] 
(d) Except as provided in paragraph 

(e) of this section, the following cat-
egories of rotorcraft must be tested in 
accordance with the requirements of 
appendix D of this part to demonstrate 
that the maximum seating capacity, 
including the crewmembers required by 
the operating rules, can be evacuated 
from the rotorcraft to the ground with-
in 90 seconds: 

(1) Rotorcraft with a seating capacity 

of more than 44 passengers. 

(2) Rotorcraft with all of the fol-

lowing: 

(i) Ten or more passengers per pas-

senger exit as determined under 
§ 29.807(b). 

(ii) No main aisle, as described in 

§ 29.815, for each row of passenger seats. 

(iii) Access to each passenger exit for 

each passenger by virtue of design fea-
tures of seats, such as folding or break- 
over seat backs or folding seats. 

(e) A combination of analysis and 

tests may be used to show that the 
rotorcraft is capable of being evacu-
ated within 90 seconds under the condi-
tions specified in § 29.803(d) if the Ad-
ministrator finds that the combination 
of analysis and tests will provide data, 

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