Section 121.342

14 CFR Ch. I (1-1-19 Edition)

relating to ice protection, or unless an
airplane is a non-transport category
airplane type certificated after December 31, 1964, that has the ice protection
provisions that meet section 34 of appendix A of part 135 of this chapter, no
person may operate an airplane in
icing conditions unless it is equipped
with means for the prevention or removal of ice on windshields, wings, empennage, propellers, and other parts of
the airplane where ice formation will
adversely affect the safety of the airplane.
(b) No person may operate an airplane in icing conditions at night unless means are provided for illuminating or otherwise determining the
formation of ice on the parts of the
wings that are critical from the standpoint of ice accumulation. Any illuminating that is used must be of a type
that will not cause glare or reflection
that would handicap crewmembers in
the performance of their duties.
(c) Non-transport category airplanes
type certificated after December 31, 1964.
Except for an airplane that has ice protection provisions that meet section 34
of appendix A of part 135 of this chapter, or those for transport category airplane type certification, no person may
operate - 
(1) Under IFR into known or forecast
light or moderate icing conditions;
(2) Under VFR into known light or
moderate icing conditions; unless the
airplane has functioning deicing antiicing equipment protecting each propeller, windshield, wing, stabilizing or
control surface, and each airspeed, altimeter, rate of climb, or flight attitude instrument system; or
(3) Into known or forecast severe
icing conditions.
(d) If current weather reports and
briefing information relied upon by the
pilot in command indicate that the
forecast icing condition that would
otherwise prohibit the flight will not
be encountered during the flight because of changed weather conditions
since the forecast, the restrictions in
paragraph (c) of this section based on
forecast conditions do not apply.
[Doc. No. 6258, 29 FR 18205, Dec. 31, 1964, as
amended by Amdt. 121-251, 60 FR 65929, Dec.
20, 1995]

Section 121.342

Pitot heat indication systems.

No person may operate a transport
category airplane or, after December
20, 1999, a nontransport category airplane type certificated after December
31, 1964, that is equipped with a flight
instrument pitot heating system unless
the airplane is also equipped with an
operable pitot heat indication system
that complies Section 25.1326 of this chapter
in effect on April 12, 1978.
[Doc. No. 28154, 60 FR 65932, Dec. 20, 1995]

Section 121.343

Flight data recorders.

(a) Except as provided in paragraphs
(b), (c), (d), (e), and (f) of this section,
no person may operate a large airplane
that is certificated for operations
above 25,000 feet altitude or is turbineengine powered unless it is equipped
with one or more approved flight recorders that record data from which
the following may be determined within the ranges, accuracies, and recording intervals specified in appendix B of
this part:
(1) Time;
(2) Altitude;
(3) Airspeed;
(4) Vertical acceleration;
(5) Heading; and
(6) Time of each radio transmission
either to or from air traffic control.
(b) No person may operate a large
airplane type certificated up to and including September 30, 1969, for operations above 25,000 feet altitude, or a
turbine-engine powered airplane certificated before the same date, unless
it is equipped before May 26, 1989 with
one or more approved flight recorders
that utilize a digital method of recording and storing data and a method of
readily retrieving that data from the
storage medium. The following information must be able to be determined
within the ranges, accuracies, and recording intervals specified in appendix
B of this part:
(1) Time;
(2) Altitude;
(3) Airspeed;
(4) Vertical acceleration;
(5) Heading; and
(6) Time of each radio transmission
either to or from air traffic control.

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