AFMAN 24-204(I)/TM 38-250/NAVSUP PUB 505/MCO P4030.19H/ DLAI 4145.3
11 DECEMBER 2001
Seat passengers forward of and separate by the greatest distance possible (minimum one full pallet
position) from dry ice.
Passenger and crewmembers will not occupy the same pallet position as dry ice.
Do not carry dry ice in any upper deck compartment.
Vent the aircraft cargo compartment to the greatest extent possible allowed by the flight profile and
Quantity limits specified in this paragraph apply to all personnel, other than aircrew members, who occupy
the cargo compartment with dry ice.
A22.214.171.124. Pressurized Aircraft. For pressurized aircraft, the amount of dry ice that can be safely shipped by air
regardless of the type container used depends on the sublimation rate of the ice, the volume of the aircraft, and the
number of air changes per hour. To minimize the sublimation rate, use insulated containers surrounded with
insulating blankets and tarpaulin during shipment to the greatest extent possible. To determine the amount of dry ice
that can be safely shipped by air, use the formula in figure A13.1.
A126.96.36.199. Aircraft on Minimum Air Changes. When aircraft is on minimum air changes per hour, safe loads are
drastically reduced. When the aircraft is on the ground longer than 45 minutes, recalculate the safe quantity using
new numbers of air changes per hour. Maximum quantities are shown in figure A13.2.
Figure A13.1. Formula For Determining Dry Ice Limitations.
V= Volume of aircraft
A= Air changes per hour
X= Maximum dry ice loading in pounds
Figure A13.2. Dry Ice Limitations When Aircraft is on Minimum Air Changes.
C-141B (See Note 1)
C-17 (See Note 2)
3,430 High Flow
1,880 Normal Flow
NOTE 1: 1,020 pounds (463 kg) with personnel.
NOTE 2: Indicates the maximum amount for operating with both air conditioning packs with no passengers in the
cargo compartment. Limitation with passengers in the cargo compartment is set at 1,040 pounds (471 kg).
A188.8.131.52. Non-pressurized Aircraft. For non-pressurized aircraft, the amount of dry ice that can be safely
shipped by air depends upon the sublimation rate and ventilation of the aircraft. To minimize the sublimation rate,
use insulated containers surrounded with insulating blankets and tarpaulins. The aircraft must have maximum
ventilation during the shipment. Under these conditions 1652.6 kg (3,644 pounds) of dry ice can be shipped on a C-
141 aircraft. With unpressurized cargo compartment, the quantity of dry ice that can be transported is unlimited if
the fumes are vented overboard the aircraft.
A184.108.40.206. C-5 Aircraft. Dry ice may be carried in the C-5A cargo compartment under the following aircraft
During cruise (mach 0.5 and up) and altitudes up to 9144 m (30,000 feet), a safe load of dry ice is 2131.5
kg (4700 pounds.) During cruise (mach 0.6 and up) and altitudes above 9144 m (30,000 feet), a safe load is
1415 kg (3120 pounds.) The Environmental Control System (ECS) must be operated with "both" air-