844 

49 CFR Ch. I (10–1–18 Edition) 

§ 175.700 

contamination. All contamination dis-
covered must be either isolated or re-
moved from the aircraft. The operation 
of an aircraft contaminated with such 
Division 6.1 materials is considered to 
be the carriage of poisonous materials 
under paragraph (a) of this section. 

(c) When unloaded from the aircraft, 

each package, overpack, pallet, or unit 
load device containing a Division 6.2 
material must be inspected for signs of 
leakage. If evidence of leakage is 
found, the cargo compartment in which 
the package, overpack, or unit load de-
vice was transported must be dis-
infected. Disinfection may be by any 
means that will make the material re-
leased ineffective at transmitting dis-
ease. 

[71 FR 14604, Mar. 22, 2006, as amended at 71 
FR 32263, June 2, 2006; 80 FR 1164, Jan. 8, 2015] 

§ 175.700

Special limitations and re-

quirements for Class 7 materials. 

(a) Except as provided in §§ 173.4a, 

173.422 and 173.423 of this subchapter, 
no person may carry any Class 7 mate-
rials aboard a passenger-carrying air-
craft unless that material is intended 
for use in, or incident to research (See 
§ 171.8 of this subchapter), medical diag-
nosis or treatment. Regardless of its 
intended use, no person may carry a 
Type B(M) package aboard a passenger- 
carrying aircraft, a vented Type B(M) 
package aboard any aircraft, or a liq-
uid pyrophoric Class 7 material aboard 
any aircraft. 

(b) 

Limits for transport index and criti-

cality safety index. 

A person may carry 

the following Class 7 (radioactive) ma-
terials aboard an aircraft only when— 

(1) On a passenger-carrying aircraft— 
(i) Each single package on the air-

craft has a transport index no greater 
than 3.0; 

(ii) The combined transport index 

and the combined criticality index of 
all the packages on the aircraft are 
each no greater than 50. 

(2) On a cargo aircraft— 
(i) Each single package on the air-

craft has a transport index no greater 
than 10.0. 

(ii) The combined transport index of 

all the packages on the aircraft is no 
greater than 200, and the combined 
criticality index of all the packages on 
the aircraft is no greater than— 

(A) 50 on a non-exclusive use cargo 

aircraft, or 

(B) 100 on an aircraft assigned for the 

exclusive use of the shipper [offeror] 
for the specific shipment of fissile 
Class 7 material. Instructions for the 
exclusive use must be developed by the 
shipper [offeror] and carrier, and the 
instructions must accompany the ship-
ping papers. 

(3) The combined transport index and 

combined criticality index are deter-
mined by adding together the transport 
index and criticality index numbers, 
respectively, shown on the labels of the 
individual packages. 

(c) No person may carry in a pas-

senger-carrying aircraft any package 
required to be labeled RADIOACTIVE 
YELLOW–II or RADIOACTIVE YEL-
LOW–III label unless the package is 
carried on the floor of the cargo com-
partment or freight container. 

[71 FR 14604, Mar. 22, 2006, as amended at 74 
FR 2268, Jan. 14, 2009] 

§ 175.701

Separation distance require-

ments for packages containing 
Class 7 (radioactive) materials in 
passenger-carrying aircraft. 

(a) The following table prescribes the 

minimum separation distances that 
must be maintained in a passenger-car-
rying aircraft between Class 7 (radio-
active) materials labeled RADIO-
ACTIVE YELLOW–II or RADIOACTIVE 
YELLOW–III and passengers and crew: 

Transport index or sum of 

transport indexes of all pack-

ages in the aircraft or 

predesignated area 

Minimum separation 

distances 

Centimeters Inches 

0.1 to 1.0 ...............................

30 

12 

1.1 to 2.0 ...............................

50 

20 

2.1 to 3.0 ...............................

70 

28 

3.1 to 4.0 ...............................

85 

34 

4.1 to 5.0 ...............................

100 

40 

5.1 to 6.0 ...............................

115 

46 

6.1 to 7.0 ...............................

130 

52 

7.1 to 8.0 ...............................

145 

57 

8.1 to 9.0 ...............................

155 

61 

9.1 to 10.0 .............................

165 

65 

10.1 to 11.0 ...........................

175 

69 

11.1 to 12.0 ...........................

185 

73 

12.1 to 13.0 ...........................

195 

77 

13.1 to 14.0 ...........................

205 

81 

14.1 to 15.0 ...........................

215 

85 

15.1 to 16.0 ...........................

225 

89 

16.1 to 17.0 ...........................

235 

93 

17.1 to 18.0 ...........................

245 

97 

18.1 to 20.0 ...........................

260 

102 

20.1 to 25.0 ...........................

290 

114 

25.1 to 30.0 ...........................

320 

126 

30.1 to 35.0 ...........................

350 

138 

35.1 to 40.0 ...........................

375 

148 

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