862
49 CFR Ch. I (10–1–23 Edition)
§ 175.34
aircraft operator must make imme-
diately available to an authorized offi-
cial of a Federal, State, or local gov-
ernment agency (which includes emer-
gency responders), the documents or
information required to be retained by
this paragraph (c).
(5) Specify the personnel to be pro-
vided the information required by para-
graph (a) of this section in their oper-
ations manual and/or other appropriate
manuals.
(d) The information required by para-
graph (a) of this section and the ship-
ping paper required by (c)(1) of this sec-
tion may be combined into one docu-
ment.
[83 FR 52899, Oct. 18, 2018, as amended at 85
FR 27899, May 11, 2020]
§ 175.34
Exceptions for cylinders of
compressed oxygen or other oxi-
dizing gases transported within the
State of Alaska.
(a)
Exceptions.
When transported in
the State of Alaska, cylinders of com-
pressed oxygen or other oxidizing gases
aboard aircraft are excepted from all
the requirements of §§ 173.302(f)(3)
through (5) and 173.304(f)(3) through (5)
of this subchapter subject to the fol-
lowing conditions:
(1) Transportation of the cylinders by
a ground-based or water-based mode of
transportation is unavailable and
transportation by aircraft is the only
practical means for transporting the
cylinders to their destination;
(2) Each cylinder is fully covered
with a fire or flame resistant blanket
that is secured in place; and
(3) The operator of the aircraft com-
plies with the applicable notification
procedures under § 175.33.
(b)
Aircraft restrictions.
This exception
only applies to the following types of
aircraft:
(1) Cargo-only aircraft transporting
the cylinders to a delivery destination
that receives cargo-only service at
least once a week.
(2) Passenger and cargo-only aircraft
transporting the cylinders to a delivery
destination that does not receive cargo
only service once a week.
[79 FR 15046, Mar. 18, 2014]
Subpart B—Loading, Unloading
and Handling
§ 175.75
Quantity limitations and
cargo location.
(a) No person may carry on an air-
craft a hazardous material except as
permitted by this subchapter.
(b)
Hazardous materials stowage.
(1)
Except as otherwise provided in this
subchapter, no person may carry a haz-
ardous material in the cabin of a pas-
senger-carrying aircraft or on the
flight deck of any aircraft, and the haz-
ardous material must be located in a
place that is inaccessible to persons
other than crew members.
(2) Hazardous materials may be car-
ried in a main deck cargo compartment
of a passenger aircraft provided that
the compartment is inaccessible to
passengers and that it meets all certifi-
cation requirements for: a Class B air-
craft cargo compartment in 14 CFR
25.857(b); or a Class C aircraft cargo
compartment in 14 CFR 25.857(c).
(3) A package bearing a ‘‘KEEP
AWAY FROM HEAT’’ handling mark-
ing must be protected from direct sun-
shine and stored in a cool and venti-
lated place, away from sources of heat.
(4) Except as provided in paragraph
(f) of this section, a package con-
taining a hazardous material accept-
able for cargo-only aircraft must be
loaded in an accessible manner.
(c) For each package containing a
hazardous material acceptable for car-
riage aboard passenger-carrying air-
craft, no more than 25 kg (55 pounds)
net weight of hazardous material may
be loaded in an inaccessible manner. In
addition to the 25 kg limitation, an ad-
ditional 75 kg (165 pounds) net weight
of Division 2.2 (non-flammable com-
pressed gas) may be loaded in an inac-
cessible manner. The requirements of
this paragraph (c) do not apply to Class
9, articles of Identification Numbers
UN0012, UN0014, or UN0055 also meeting
the requirements of § 173.63(b) of this
subchapter, articles of Identification
Numbers UN3528 or UN3529, and Lim-
ited or Excepted Quantity material.
(d) For the purposes of this section—
(1)
Accessible
means, on passenger-
carrying or cargo-only aircraft that
each package is loaded where a crew
member or other authorized person can
863
Pipeline and Haz. Matls. Safety Admin., DOT
§ 175.75
access, handle, and, when size and
weight permit, separate such packages
from other cargo during flight, includ-
ing a freight container in an accessible
cargo compartment when packages are
loaded in an accessible manner. Addi-
tionally, a package is considered acces-
sible when transported on a cargo-only
aircraft if it is:
(i) In a cargo compartment certified
by FAA as a Class C aircraft cargo
compartment as defined in 14 CFR
25.857(c); or
(ii) In an FAA-certified freight con-
tainer that has an approved fire or
smoke detection system and fire sup-
pression system equivalent to that re-
quired by the certification require-
ments for a Class C aircraft cargo com-
partment.
(2)
Inaccessible
means all other con-
figurations to include packages loaded
where a crew member or other author-
ized person cannot access, handle, and,
when size and weight permit, separate
such packages from other cargo during
flight, including a freight container in
an accessible cargo compartment when
packages are loaded in an inaccessible
manner.
(e) For transport aboard cargo-only
aircraft, the requirements of para-
graphs (c) and (d) of this section do not
apply to the following hazardous mate-
rials:
(1) Class 3, PG III (unless the sub-
stance is also labeled CORROSIVE),
Class 6.1 (unless the substance is also
labeled for any hazard class or division
except FLAMMABLE LIQUID), Divi-
sion 6.2, Class 7 (unless the hazardous
material meets the definition of an-
other hazard class), Class 9, articles of
Identification Numbers UN0012,
UN0014, or UN0055 also meeting the re-
quirements of § 173.63(b) of this sub-
chapter, articles of Identification Num-
bers UN3528 or UN3529, and those
marked as a Limited Quantity or Ex-
cepted Quantity material.
(2) Packages of hazardous materials
transported aboard a cargo aircraft,
when other means of transportation
are impracticable or not available, in
accordance with procedures approved
in writing by the FAA Regional Office
in the region where the operator is cer-
tificated.
(3) Packages of hazardous materials
carried on small, single pilot, cargo
aircraft if:
(i) No person is carried on the air-
craft other than the pilot, an FAA
Flight Standards inspector, the shipper
or consignee of the material, a rep-
resentative of the shipper or consignee
so designated in writing, or a person
necessary for handling the material;
(ii) The pilot is provided with written
instructions on the characteristics and
proper handling of the materials; and
(iii) Whenever a change of pilots oc-
curs while the material is on board, the
new pilot is briefed under a hand-to-
hand signature service provided by the
operator of the aircraft.
(f) At a minimum, quantity limits
and loading instructions in the fol-
lowing quantity and loading table must
be followed to maintain acceptable
quantity and loading between packages
containing hazardous materials. The
quantity and loading table is as fol-
lows:
Q
UANTITY AND
L
OADING
T
ABLE
Applicability
Forbidden
Quantity Limitation: 25 kg
net weight of hazardous
material plus 75 kg net
weight of Division 2.2
(non-flammable com-
pressed gas) per cargo
compartment
No limit
Passenger-carrying aircraft
Cargo Aircraft Only la-
beled packages.
Inaccessible ......................
Accessible.
Cargo-only aircraft— ..........
Packages authorized
aboard a passenger-car-
rying aircraft.
Not applicable ...................
Inaccessible (Note 1) ........
Accessible (Note 2).
864
49 CFR Ch. I (10–1–23 Edition)
§ 175.78
Q
UANTITY AND
L
OADING
T
ABLE
—Continued
Applicability
Forbidden
Quantity Limitation: 25 kg
net weight of hazardous
material plus 75 kg net
weight of Division 2.2
(non-flammable com-
pressed gas) per cargo
compartment
No limit
Cargo-only aircraft— ..........
Packages not authorized
aboard a passenger-car-
rying aircraft and dis-
playing a Cargo Aircraft
Only label.
Inaccessible (Note 1) ........
Not applicable ...................
Accessible (Note 2).
Note 1 to § 175.75(f):
The following materials are not subject to this loading restriction—
a. Class 3, PG III (unless the substance is also labeled CORROSIVE).
b. Division 6.1 (unless the substance is also labeled for any hazard class or division except FLAMMABLE LIQUID).
c. Division 6.2.
d. Class 7 (unless the hazardous material meets the definition of another hazard class).
e. Class 9, Limited Quantity, or Excepted Quantity material.
f. Articles of Identification Numbers UN0012, UN0014, or UN0055 also meeting the requirements of § 173.63(b).
g. Articles of Identification Numbers UN3528 or UN3529.
Note 2 to § 175.75(f):
Aboard cargo-only aircraft, packages required to be loaded in a position that is considered to be accessible include those load-
ed in a Class C cargo compartment.
[76 FR 82178, Dec. 30, 2011, as amended at 78 FR 65486, Oct. 31, 2013; 81 FR 35544, June 2, 2016;
82 FR 15892, Mar. 30, 2017; 85 FR 83402, Dec. 21, 2020; 87 FR 44998, July 26, 2022]
§ 175.78
Stowage compatibility of
cargo.
(a) For stowage on an aircraft, in a
cargo facility, or in any other area at
an airport designated for the stowage
of hazardous materials, packages con-
taining hazardous materials which
might react dangerously with one an-
other may not be placed next to each
other or in a position that would allow
a dangerous interaction in the event of
leakage.
(b)(1) At a minimum, the segregation
instructions prescribed in the following
Segregation Table must be followed to
maintain acceptable segregation be-
tween packages containing hazardous
materials with different hazards. The
Segregation Table instructions apply
whether or not the class or division is
the primary or subsidiary risk.
(2) Packages and overpacks con-
taining articles of Identification Num-
bers UN3090 and UN3480 prepared in ac-
cordance with § 173.185(b)(3) and
(c)(4)(vi) must not be stowed on an air-
craft next to, in contact with, or in a
position that would allow interaction
with packages or overpacks containing
hazardous materials that bear a Class 1
(other than Division 1.4S), Division 2.1,
Class 3, Division 4.1, or Division 5.1
hazard label. To maintain acceptable
segregation between packages and
overpacks, the segregation require-
ments shown in the Segregation Table
must be followed. The segregation re-
quirements apply based on all hazard
labels applied to the package or over-
pack, irrespective of whether the haz-
ard is the primary or subsidiary haz-
ard.