Code of Federal Regulations - Title 14

761

Federal Aviation Administration, DOT

§ 29.787

(f) Each seat and its supporting

structure must be designed for an occu-
pant weight of at least 170 pounds, con-
sidering the maximum load factors, in-
ertial forces, and reactions between the
occupant, seat, and safety belt or har-
ness corresponding with the applicable
flight and ground-load conditions, in-
cluding the emergency landing condi-
tions of § 29.561(b). In addition—

(1) Each pilot seat must be designed

for the reactions resulting from the ap-
plication of the pilot forces prescribed
in § 29.397; and

(2) The inertial forces prescribed in

§ 29.561(b) must be multiplied by a fac-
tor of 1.33 in determining the strength
of the attachment of—

(i) Each seat to the structure; and
(ii) Each safety belt or harness to the

seat or structure.

(g) When the safety belt and shoulder

harness are combined, the rated
strength of the safety belt and shoulder
harness may not be less than that cor-
responding to the inertial forces speci-
fied in § 29.561(b), considering the occu-
pant weight of at least 170 pounds, con-
sidering the dimensional characteris-
tics of the restraint system installa-
tion, and using a distribution of at
least a 60-percent load to the safety
belt and at least a 40-percent load to
the shoulder harness. If the safety belt
is capable of being used without the
shoulder harness, the inertial forces
specified must be met by the safety
belt alone.

(h) When a headrest is used, the head-

rest and its supporting structure must
be designed to resist the inertia forces
specified in § 29.561, with a 1.33 fitting
factor and a head weight of at least 13
pounds.

(i) Each seating device system in-

cludes the device such as the seat, the
cushions, the occupant restraint sys-
tem and attachment devices.

(j) Each seating device system may

use design features such as crushing or
separation of certain parts of the seat
in the design to reduce occupant loads
for the emergency landing dynamic
conditions of § 29.562; otherwise, the
system must remain intact and must
not interfere with rapid evacuation of
the rotorcraft.

(k) For purposes of this section, a lit-

ter is defined as a device designed to

carry a nonambulatory person, pri-
marily in a recumbent position, into
and on the rotorcraft. Each berth or
litter must be designed to withstand
the load reaction of an occupant
weight of at least 170 pounds when the
occupant is subjected to the forward
inertial factors specified in § 29.561(b).
A berth or litter installed within 15

less of the longitudinal axis of the
rotorcraft must be provided with a pad-
ded end-board, cloth diaphragm, or
equivalent means that can withstand
the forward load reaction. A berth or
litter oriented greater than 15

with

the longitudinal axis of the rotorcraft
must be equipped with appropriate re-
straints, such as straps or safety belts,
to withstand the forward reaction. In
addition—

(1) The berth or litter must have a re-

straint system and must not have cor-
ners or other protuberances likely to
cause serious injury to a person occu-
pying it during emergency landing con-
ditions; and

(2) The berth or litter attachment

and the occupant restraint system at-
tachments to the structure must be de-
signed to withstand the critical loads
resulting from flight and ground load
conditions and from the conditions pre-
scribed in § 29.561(b). The fitting factor
required by § 29.625(d) shall be applied.

[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as
amended by Amdt. 29–24, 49 FR 44437, Nov. 6,
1984; Amdt. 29–29, 54 FR 47320, Nov. 13, 1989;
Amdt. 29–42, 63 FR 43285, Aug. 12, 1998]

§ 29.787

Cargo and baggage compart-

ments.

(a) Each cargo and baggage compart-

ment must be designed for its plac-
arded maximum weight of contents and
for the critical load distributions at
the appropriate maximum load factors
corresponding to the specified flight
and ground load conditions, except the
emergency landing conditions of
§ 29.561.

(b) There must be means to prevent

the contents of any compartment from
becoming a hazard by shifting under
the loads specified in paragraph (a) of
this section.

ditions of § 29.561, cargo and baggage
compartments must—

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