Federal Aviation Administration, DOT

Section 121.309

turbine engine powered airplanes to
provide equivalent safety, no person
may conduct any operation under this
part without the following engine instruments:
(a) A carburetor air temperature indicator for each engine.
(b) A cylinder head temperature indicator for each air-cooled engine.
(c) A fuel pressure indicator for each
engine.
(d) A fuel flowmeter or fuel mixture
indicator for each engine not equipped
with an automatic altitude mixture
control.
(e) A means for indicating fuel quantity in each fuel tank to be used.
(f) A manifold pressure indicator for
each engine.
(g) An oil pressure indicator for each
engine.
(h) An oil quantity indicator for each
oil tank when a transfer or separate oil
reserve supply is used.
(i) An oil-in temperature indicator
for each engine.
(j) A tachometer for each engine.
(k) An independent fuel pressure
warning device for each engine or a
master warning device for all engines
with a means for isolating the individual warning circuits from the master warning device.
(l) A device for each reversible propeller, to indicate to the pilot when the
propeller is in reverse pitch, that complies with the following:
(1) The device may be actuated at
any point in the reversing cycle between the normal low pitch stop position and full reverse pitch, but it may
not give an indication at or above the
normal low pitch stop position.
(2) The source of indication must be
actuated by the propeller blade angle
or be directly responsive to it.
Section 121.308 Lavatory fire protection.
(a) Except as provided in paragraphs
(c) and (d) of this section, no person
may operate a passenger-carrying airplane unless each lavatory in the airplane is equipped with a smoke detector system or equivalent that provides
a warning light in the cockpit or provides a warning light or audio warning
in the passenger cabin which would be
readily detected by a flight attendant,
taking into consideration the posi-

tioning of flight attendants throughout
the passenger compartment during various phases of flight.
(b) Except as provided in paragraph
(c) of this section, no person may operate a passenger-carrying airplane unless each lavatory in the airplane is
equipped with a built-in fire extinguisher for each disposal receptacle for
towels, paper, or waste located within
the lavatory. The built-in fire extinguisher must be designed to discharge
automatically into each disposal receptacle upon occurrence of a fire in the
receptacle.
(c) Until December 22, 1997, a certificate holder described in Section 121.2(a) (1) or
(2) may operate an airplane with a passenger seat configuration of 30 or fewer
seats that does not comply with the
smoke detector system requirements
described in paragraph (a) of this section and the fire extinguisher requirements described in paragraph (b) of
this section.
(d) After December 22, 1997, no person
may operate a nontransport category
airplane type certificated after December 31, 1964, with a passenger seat configuration of 10-19 seats unless that
airplane complies with the smoke detector system requirements described
in paragraph (a) of this section, except
that the smoke detector system or
equivalent must provide a warning
light in the cockpit or an audio warning that would be readily detected by
the flightcrew.
[Doc. No. 28154, 60 FR 65929, Dec. 20, 1995]

Section 121.309 Emergency equipment.
(a) General: No person may operate
an airplane unless it is equipped with
the emergency equipment listed in this
section and in Section 121.310.
(b) Each item of emergency and flotation equipment listed in this section
and in SectionSection 121.310, 121.339, and 121.340 - 
(1) Must be inspected regularly in accordance with inspection periods established in the operations specifications
to ensure its condition for continued
serviceability and immediate readiness
to perform its intended emergency purposes;
(2) Must be readily accessible to the
crew and, with regard to equipment located in the passenger compartment,
to passengers;

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