Federal Aviation Administration, DOT

Section 29.771

the tire and any part of the structure
or systems.
[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as
amended by Amdt. 29-12, 41 FR 55471, Dec. 20,
1976]

Section 29.735

Brakes.

For rotorcraft with wheel-type landing gear, a braking device must be installed that is - 
(a) Controllable by the pilot;
(b) Usable during power-off landings;
and
(c) Adequate to - 
(1) Counteract any normal unbalanced torque when starting or stopping
the rotor; and
(2) Hold the rotorcraft parked on a
10-degree slope on a dry, smooth pavement.
[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as
amended by Amdt. 29-24, 49 FR 44437, Nov. 6,
1984]

Section 29.737

Skis.

(a) The maximum limit load rating of
each ski must equal or exceed the maximum limit load determined under the
applicable ground load requirements of
this part.
(b) There must be a stabilizing means
to maintain the ski in an appropriate
position during flight. This means
must have enough strength to withstand the maximum aerodynamic and
inertia loads on the ski.
FLOATS AND HULLS

spaschal on DSK3GDR082PROD with CFR

Section 29.751

Main float buoyancy.

(a) For main floats, the buoyancy
necessary to support the maximum
weight of the rotorcraft in fresh water
must be exceeded by - 
(1) 50 percent, for single floats; and
(2) 60 percent, for multiple floats.
(b) Each main float must have
enough water-tight compartments so
that, with any single main float compartment flooded, the mainfloats will
provide a margin of positive stability
great enough to minimize the probability of capsizing.
[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as
amended by Amdt. 29-3, 33 FR 967, Jan. 26,
1968]

Section 29.753 Main float design.
(a) Bag floats. Each bag float must be
designed to withstand - 
(1) The maximum pressure differential that might be developed at the
maximum altitude for which certification with that float is requested; and
(2) The vertical loads prescribed in
Section 29.521(a), distributed along the length
of the bag over three-quarters of its
projected area.
(b) Rigid floats. Each rigid float must
be able to withstand the vertical, horizontal, and side loads prescribed in
Section 29.521. An appropriate load distribution under critical conditions must be
used.
Section 29.755 Hull buoyancy.
Water-based and amphibian rotorcraft.
The hull and auxiliary floats, if used,
must have enough watertight compartments so that, with any single compartment of the hull or auxiliary floats
flooded, the buoyancy of the hull and
auxiliary floats, and wheel tires if
used, provides a margin of positive
water stability great enough to minimize the probability of capsizing the
rotorcraft for the worst combination of
wave heights and surface winds for
which approval is desired.
[Amdt. 29-3, 33 FR 967, Jan. 26, 1968, as
amended by Amdt. 27-26, 55 FR 8003, Mar. 6,
1990]

Section 29.757 Hull
and
auxiliary
float
strength.
The hull, and auxiliary floats if used,
must withstand the water loads prescribed by Section 29.519 with a rational and
conservative distribution of local and
distributed water pressures over the
hull and float bottom.
[Amdt. 29-3, 33 FR 967, Jan. 26, 1968]

PERSONNEL AND CARGO
ACCOMMODATIONS
Section 29.771 Pilot compartment.
For each pilot compartment - 
(a) The compartment and its equipment must allow each pilot to perform
his duties without unreasonable concentration or fatigue;
(b) If there is provision for a second
pilot, the rotorcraft must be controllable with equal safety from either

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