298
14 CFR Ch. I (1–1–14 Edition)
§ 23.1305
(vi) Is appropriately lighted during
all phases of operation.
[Doc. No. 4080, 29 FR 17955, Dec. 18, 1964, as
amended by Amdt. 23–17, 41 FR 55465, Dec. 20,
1976; Amdt. 23–43, 58 FR 18975, Apr. 9, 1993;
Amdt. 23–49, 61 FR 5168, Feb. 9, 1996; Amdt.
23–62, 76 FR 75760, Dec. 2, 2011]
§ 23.1305
Powerplant instruments.
The following are required power-
plant instruments:
(a)
For all airplanes. (1) A fuel quan-
tity indicator for each fuel tank, in-
stalled in accordance with § 23.1337(b).
(2) An oil pressure indicator for each
engine.
(3) An oil temperature indicator for
each engine.
(4) An oil quantity measuring device
for each oil tank which meets the re-
quirements of § 23.1337(d).
(5) A fire warning means for those
airplanes required to comply with
§ 23.1203.
(b)
For reciprocating engine-powered
airplanes. In addition to the powerplant
instruments required by paragraph (a)
of this section, the following power-
plant instruments are required:
(1) An induction system air tempera-
ture indicator for each engine equipped
with a preheater and having induction
air temperature limitations that can
be exceeded with preheat.
(2) A tachometer indicator for each
engine.
(3) A cylinder head temperature indi-
cator for—
(i) Each air-cooled engine with cowl
flaps;
(ii) [Reserved]
(iii) Each commuter category air-
plane.
(4) For each pump-fed engine, a
means:
(i) That continuously indicates, to
the pilot, the fuel pressure or fuel flow;
or
(ii) That continuously monitors the
fuel system and warns the pilot of any
fuel flow trend that could lead to en-
gine failure.
(5) A manifold pressure indicator for
each altitude engine and for each en-
gine with a controllable propeller.
(6) For each turbocharger installa-
tion:
(i) If limitations are established for
either carburetor (or manifold) air
inlet temperature or exhaust gas or
turbocharger turbine inlet tempera-
ture, indicators must be furnished for
each temperature for which the limita-
tion is established unless it is shown
that the limitation will not be exceed-
ed in all intended operations.
(ii) If its oil system is separate from
the engine oil system, oil pressure and
oil temperature indicators must be pro-
vided.
(7) A coolant temperature indicator
for each liquid-cooled engine.
(c)
For turbine engine-powered air-
planes. In addition to the powerplant
instruments required by paragraph (a)
of this section, the following power-
plant instruments are required:
(1) A gas temperature indicator for
each engine.
(2) A fuel flowmeter indicator for
each engine.
(3) A fuel low pressure warning
means for each engine.
(4) A fuel low level warning means for
any fuel tank that should not be de-
pleted of fuel in normal operations.
(5) A tachometer indicator (to indi-
cate the speed of the rotors with estab-
lished limiting speeds) for each engine.
(6) An oil low pressure warning
means for each engine.
(7) An indicating means to indicate
the functioning of the powerplant ice
protection system for each engine.
(8) For each engine, an indicating
means for the fuel strainer or filter re-
quired by § 23.997 to indicate the occur-
rence of contamination of the strainer
or filter before it reaches the capacity
established in accordance with
§ 23.997(d).
(9) For each engine, a warning means
for the oil strainer or filter required by
§ 23.1019, if it has no bypass, to warn the
pilot of the occurrence of contamina-
tion of the strainer or filter screen be-
fore it reaches the capacity established
in accordance with § 23.1019(a)(5).
(10) An indicating means to indicate
the functioning of any heater used to
prevent ice clogging of fuel system
components.
(d)
For turbojet/turbofan engine-pow-
ered airplanes. In addition to the power-
plant instruments required by para-
graphs (a) and (c) of this section, the
following powerplant instruments are
required:
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