background image

866 

49 CFR Ch. I (10–1–23 Edition) 

§ 175.88 

(c) Instructions for using the Seg-

regation Table are as follows: 

(1) Hazard labels, classes or divisions 

not shown in the table are not subject 
to segregation requirements. 

(2) Dots at the intersection of a row 

and column indicate that no restric-
tions apply. 

(3) The letter ‘‘X’’ at the intersection 

of a row and column indicates that 
packages containing these classes of 
hazardous materials may not be stowed 
next to or in contact with each other, 
or in a position which would allow 
interaction in the event of leakage of 
the contents. 

(4) Note 1. ‘‘Note 1’’ at the intersec-

tion of a row and column means the 
following: 

(i) Only Division 1.4, Compatibility 

Group S, explosives are permitted to be 
transported aboard a passenger air-
craft. Only certain Division 1.3, Com-
patibility Groups C and G, and Division 
1.4, Compatibility Groups B, C, D, E, G 
and S, explosives may be transported 
aboard a cargo aircraft. 

(ii) Division 1.4 explosives in Compat-

ibility Group S may be stowed with Di-
vision 1.3 and 1.4 explosives in compat-
ibility groups as permitted aboard air-
craft under paragraph (c)(4)(i) above. 

(iii) Except for Division 1.4B explo-

sives and as otherwise provided in this 
Note, explosives of different compat-
ibility groups may be stowed together 
whether or not they belong to the same 
division. Division 1.4B explosives must 
not be stowed together with any other 
explosive permitted aboard aircraft ex-
cept Division 1.4S, unless segregated as 
prescribed in paragraph (c)(4)(iv) of 
this section (‘‘Note 1’’). 

(iv) Division 1.4B and Division 1.3 ex-

plosives may not be stowed together. 
Division 1.4B explosives must be loaded 
into separate unit load devices and, 
when stowed aboard the aircraft, the 
unit load devices must be separated by 
other cargo with a minimum separa-
tion of 2 m (6.5 feet). When not loaded 
in unit load devices, Division 1.4B and 
Division 1.3 explosives must be loaded 
into different, non-adjacent loading po-
sitions and separated by other cargo 
with a minimum separation of 2 m (6.5 
feet). 

(5) Note 2. ‘‘Note 2’’ at the intersec-

tion of a row and column means that 

other than explosives of Division 1.4, 
Compatibility Group S, explosives may 
not be stowed together with that class. 

(6) Packages containing hazardous 

materials with multiple hazards in the 
class or divisions, which require seg-
regation in accordance with the Seg-
regation Table, need not be segregated 
from other packages bearing the same 
UN number. 

(7) A package labeled ‘‘BLASTING 

AGENT’’ may not be stowed next to or 
in a position that will allow contact 
with a package of special fireworks or 
railway torpedoes. 

(8) Note 3. ‘‘Note 3’’ at the intersec-

tion of a row and column means that 
UN 3528, Engines, internal combustion, 
flammable liquid powered; Engines, 
fuel cell, flammable liquid powered; 
Machinery internal combustion, flam-
mable liquid powered; and Machinery, 
fuel cell, flammable liquid powered 
need not be segregated from packages 
containing dangerous goods in Division 
5.1. 

[71 FR 14604, Mar. 22, 2006, as amended at 71 
FR 54396, Sept. 14, 2006; 71 FR 78634, Dec. 29, 
2006; 76 FR 3384, Jan. 19, 2011; 85 FR 27899, 
May 11, 2020] 

§ 175.88

Inspection, orientation and se-

curing packages of hazardous mate-
rials. 

(a) A unit load device may not be 

loaded on an aircraft unless the device 
has been inspected and found to be free 
from any evidence of leakage from, or 
damage to, any package containing 
hazardous materials. 

(b) A package containing hazardous 

materials marked ‘‘THIS SIDE UP’’ or 
‘‘THIS END UP’’, or with arrows to in-
dicate the proper orientation of the 
package, must be stored and loaded 
aboard an aircraft in accordance with 
such markings. A package without ori-
entation markings containing liquid 
hazardous materials must be stored 
and loaded with top closure facing up-
ward. 

(c) Packages containing hazardous 

materials must be: 

(1) Secured in an aircraft in a manner 

that will prevent any shifting or 
change in the orientation of the pack-
ages; 

background image

867 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 175.310 

(2) Protected from being damaged, in-

cluding by the shifting of baggage, 
mail, stores, or other cargo; 

(3) Loaded so that accidental damage 

is not caused through dragging or mis-
handling; and 

(4) When containing Class 7 (radio-

active) materials, secured in a manner 
that ensures that the separation re-
quirements of §§ 175.701 and 175.702 will 
be maintained at all times during 
flight. 

[71 FR 14604, Mar. 22, 2006, as amended at 83 
FR 52900, Oct. 18, 2018] 

§ 175.90

Damaged shipments. 

(a) Packages or overpacks containing 

hazardous materials must be inspected 
for damage or leakage after being un-
loaded from an aircraft. When pack-
ages or overpacks containing haz-
ardous materials have been transported 
in a unit load device, the area where 
the unit load device was stowed must 
be inspected for evidence of leakage or 
contamination immediately upon re-
moval of the unit load device from the 
aircraft, and the packages or overpacks 
must be inspected for evidence of dam-
age or leakage when the unit load de-
vice is unloaded. In the event of leak-
age or suspected leakage, the compart-
ment in which the package, overpack, 
or unit load device was carried must be 
inspected for contamination and decon-
taminated, if applicable. 

(b) Except as provided in § 175.700, the 

operator of an aircraft must remove 
from the aircraft any package, baggage 
or cargo that appears to be leaking or 
contaminated by a hazardous material. 
In the case of a package, baggage or 
cargo that appears to be leaking, the 
operator must ensure that other pack-
ages, baggage or cargo in the same 
shipment are in proper condition for 
transport aboard the aircraft and that 
no other package, baggage or cargo has 
been contaminated or is leaking. If an 
operator becomes aware that a pack-
age, baggage or cargo not identified as 
containing a hazardous material has 
been contaminated, or the operator has 
cause to believe that a hazardous mate-
rial may be the cause of the contami-
nation, the operator must take reason-
able steps to identify the nature and 
source of contamination before pro-
ceeding with the loading of the con-

taminated baggage or cargo. If the con-
taminating substance is found or sus-
pected to be hazardous material, the 
operator must isolate the package, 
baggage or cargo and take appropriate 
steps to eliminate any identified haz-
ard before continuing the transpor-
tation of the item by aircraft. 

(c) No person may place aboard an 

aircraft a package, baggage or cargo 
that is contaminated with a hazardous 
material or appears to be leaking. 

(d) If a package containing a mate-

rial in Division 6.2 (infectious sub-
stance) is found to be damaged or leak-
ing, the person finding the package 
must: 

(1) Avoid handling the package or 

keep handling to a minimum; 

(2) Inspect packages adjacent to the 

leaking package for contamination and 
withhold from further transportation 
any contaminated packages until it is 
ascertained that they can be safely 
transported; 

(3) Comply with the reporting re-

quirement of §§ 171.15 and 175.31 of this 
subchapter; and 

(4) Notify the consignor or consignee. 

Subpart C—Specific Regulations 

Applicable According to 
Classification of Material 

§ 175.310

Transportation of flammable 

liquid fuel; aircraft only means of 
transportation. 

(a) When other means of transpor-

tation are impracticable, flammable 
liquid fuels may be carried on certain 
passenger and cargo aircraft as pro-
vided in this section, without regard to 
the packaging references and quantity 
limits listed in Columns 7, 8 and 9 of 
the § 172.101 Hazardous Materials Table. 
All requirements of this subchapter 
that are not specifically covered in this 
section continue to apply to shipments 
made under the provisions of this sec-
tion. For purposes of this section ‘‘im-
practicable’’ means transportation is 
not physically possible or cannot be 
performed by routine and frequent 
means of other transportation, due to 
extenuating circumstances. Extenu-
ating circumstances include: condi-
tions precluding highway or water 
transportation, such as a frozen vessel