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360

49 CFR Ch. I (10–1–18 Edition)

§ 172.102

(v) The box must be constructed from high-

density polyethylene in the density
range 0.950–0.962, and be capable of hold-
ing liquid when in the upright position.

387

When materials are stabilized by tem-

perature control, the provisions of
§ 173.21(f) of this subchapter apply. When
chemical stabilization is employed, the
person offering the material for transport
shall ensure that the level of stabilization
is sufficient to prevent the material as
packaged from dangerous polymerization
at 50

C (122

F). If chemical stabilization

becomes ineffective at lower temperatures
within the anticipated duration of trans-
port, temperature control is required and
is forbidden by aircraft. In making this de-
termination factors to be taken into con-
sideration include, but are not limited to,
the capacity and geometry of the pack-
aging and the effect of any insulation
present, the temperature of the material
when offered for transport, the duration of
the journey, and the ambient temperature
conditions typically encountered in the
journey (considering also the season of
year), the effectiveness and other prop-
erties of the stabilizer employed, applica-
ble operational controls imposed by regu-
lation (

e.g.

requirements to protect from

sources of heat, including other cargo car-
ried at a temperature above ambient) and
any other relevant factors. The provisions
of this special provision will be effective
until January 2, 2019, unless we terminate
them earlier or extend them beyond that
date by notice of a final rule in the F

ERAL

EGISTER

420

This entry does not apply to manufac-

tured articles (such as table tennis balls).

421

This entry will no longer be effective on

January 2, 2019 unless we terminate it ear-
lier or extend it beyond that date by notice
of a final rule in the F

EDERAL

EGISTER

422

When labelling is required, the label to

be used must be the label shown in § 172.447.
Labels conforming to requirements in
place on December 31, 2016 may continue to
be used until December 31, 2018. When a
placard is displayed, the placard must be
the placard shown in § 172.560.

(2)

‘‘A’’ codes.

These provisions apply

only to transportation by aircraft:

Code/Special Provisions

Single packagings are not permitted on

passenger aircraft.

Single packagings are not permitted on

aircraft.

For combination packagings, if glass

inner packagings (including ampoules) are
used, they must be packed with absorbent
material in tightly closed metal recep-
tacles before packing in outer packagings.

Liquids having an inhalation toxicity of

Packing Group I are not permitted on air-
craft.

Solids having an inhalation toxicity of

Packing Group I are not permitted on pas-
senger aircraft and may not exceed a max-
imum net quantity per package of 15 kg (33
pounds) on cargo aircraft.

For combination packagings, if plastic

inner packagings are used, they must be
packed in tightly closed metal receptacles
before packing in outer packagings.

Steel packagings must be corrosion-re-

sistant or have protection against corro-
sion.

For combination packagings, if glass

inner packagings (including ampoules) are
used, they must be packed with cushioning
material in tightly closed metal recep-
tacles before packing in outer packagings.

For combination packagings, if plastic

bags are used, they must be packed in
tightly closed metal receptacles before
packing in outer packagings.

A10

When aluminum or aluminum alloy

construction materials are used, they must
be resistant to corrosion.

A11

For combination packagings, when

metal inner packagings are permitted,
only specification cylinders constructed of
metals which are compatible with the haz-
ardous material may be used.

A13

Bulk packagings are not authorized for

transportation by aircraft.

A14

This material is not authorized to be

transported as a limited quantity or con-
sumer commodity in accordance with
§ 173.306 of this subchapter when trans-
ported aboard an aircraft.

A19

Combination packagings consisting of

outer fiber drums or plywood drums, with
inner plastic packagings, are not author-
ized for transportation by aircraft.

A20

Plastic bags as inner receptacles of

combination packagings are not authorized
for transportation by aircraft.

A29

Combination packagings consisting of

outer expanded plastic boxes with inner
plastic bags are not authorized for trans-
portation by aircraft.

A30

Ammonium permanganate is not au-

thorized for transportation on aircraft.

A34

Aerosols containing a corrosive liquid

in Packing Group II charged with a gas are
not permitted for transportation by air-
craft.

A35

This includes any material which is not

covered by any of the other classes but
which has an anesthetic, narcotic, noxious
or other similar properties such that, in
the event of spillage or leakage on an air-
craft, extreme annoyance or discomfort
could be caused to crew members so as to
prevent the correct performance of as-
signed duties.

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