Pipeline and Haz. Matls. Safety Admin., DOT
and must be durably marked by the
manufacturer with the wording:  - APPROVED FOR CARRIAGE IN AIRCRAFT CABIN ONLY -  to indicate that
the fuel cell meets this requirement.
(21) Permeation devices for calibrating air quality monitoring equipment when carried in checked baggage
provided the devices are constructed
and packaged in accordance with
Section 173.175.
(22) An internal combustion or fuel
cell engine or a machine or apparatus
containing an internal combustion or
fuel cell engine when carried as
checked baggage, provided - 
(i) The engine contains no liquid or
gaseous fuel. An engine may be considered as not containing fuel when the
engine components and any fuel lines
have been completed drained, sufficiently cleaned of residue, and purged
of vapors to remove any potential hazard and the engine when held in any
orientation will not release any liquid
fuel;
(ii) The fuel tank contains no liquid
or gaseous fuel. A fuel tank may be
considered as not containing fuel when
the fuel tank and the fuel lines have
been completed drained, sufficiently
cleaned of residue, and purged of vapors to remove any potential hazard;
(iii) It is not equipped with a wet battery (including a non-spillable battery), a sodium battery or a lithium
battery; and
(iv) It contains no other hazardous
materials subject to the requirements
of this subchapter.
(23) Non-infectious specimens in preservative solutions transported in accordance with Section 173.4b(b) of this subchapter.
(24) Insulated packagings containing
refrigerated liquid nitrogen when carried in checked or carry-on baggage in
accordance with the ICAO Technical
Instructions (IBR, see Section 171.7 of this
subchapter), Packing Instruction 202,
the packaging specifications in part 6,
chapter 5, and special provision A152.
(25) Small cartridges fitted into or securely packed with devices with no
more than four small cartridges of carbon dioxide or other suitable gas in Division 2.2, without subsidiary risk with
the approval of the operator. The water
capacity of each cartridge must not ex-

Section 175.25

ceed 50 mL (equivalent to a 28 g cartridge).
(b) The exceptions provided in paragraph (a) of this section also apply to
aircraft operators when transporting
passenger or crewmember baggage that
has been separated from the passenger
or crewmember, including transfer to
another carrier for transport to its
final destination.
(c) The requirements to submit incident reports as required under SectionSection 171.15
and 171.16 of this subchapter apply to
the air carrier.
[71 FR 14604, Mar. 22, 2006]
EDITORIAL NOTE: For FEDERAL REGISTER citations affecting Section 175.10, see the List of CFR
Sections Affected, which appears in the
Finding Aids section of the printed volume
and at www.fdsys.gov.

Section 175.20

Compliance and training.

An air carrier may not transport a
hazardous material by aircraft unless
each of its hazmat employees involved
in that transportation is trained as required by subpart H of part 172 of this
subchapter. In addition, air carriers
must comply with all applicable hazardous materials training requirements
in 14 CFR part 121 and 135.
Section 175.25

Passenger notification system.

(a) General. Each person who engages
in for hire air transportation of passengers must effectively inform passengers about hazardous materials that
passengers are forbidden to transport
on aircraft and must accomplish this
through the development, implementation, and maintenance of a passenger
notification system.
(b) Passenger notification system requirements. The passenger notification
system required by paragraph (a) of
this section must ensure that:
(1) A passenger is presented with information required under paragraph (a)
of this section at the point of ticket
purchase or, if this is not practical, in
another way prior to boarding pass
issuance;
(2) A passenger is presented with information required under paragraph (a)
of this section at the point of boarding
pass issuance (i.e. check-in), or when no
boarding pass is issued, prior to boarding the aircraft;

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