Section 121.597

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

Section 121.597 Flight release authority: Supplemental operations.
(a) No person may start a flight
under a flight following system without specific authority from the person
authorized by the operator to exercise
operational control over the flight.
(b) No person may start a flight unless the pilot in command or the person
authorized by the operator to exercise
operational control over the flight has
executed a flight release setting forth
the conditions under which the flights
will be conducted. The pilot in command may sign the flight release only
when he and the person authorized by
the operator to exercise operational
control believe that the flight can be
made with safety.
(c) No person may continue a flight
from an intermediate airport without a
new flight release if the aircraft has
been on the ground more than six
hours.
[Doc. No. 6258, 29 FR 19222, Dec. 31, 1964, as
amended by Amdt. 121-3, 30 FR 3639, Mar. 19,
1965]

Section 121.599 Familiarity
with
weather
conditions.
(a) Domestic and flag operations. No
aircraft dispatcher may release a flight
unless he is thoroughly familiar with
reported and forecast weather conditions on the route to be flown.
(b) Supplemental operations. No pilot
in command may begin a flight unless
he is thoroughly familiar with reported
and forecast weather conditions on the
route to be flown.
[Doc. No. 6258, 29 FR 19222, Dec. 31, 1964, as
amended by Amdt. 121-253, 61 FR 2614, Jan.
26, 1996]

Section 121.601 Aircraft dispatcher information to pilot in command: Domestic
and flag operations.
(a) The aircraft dispatcher shall provide the pilot in command all available
current reports or information on airport conditions and irregularities of
navigation facilities that may affect
the safety of the flight.
(b) Before beginning a flight, the aircraft dispatcher shall provide the pilot
in command with all available weather
reports and forecasts of weather phenomena that may affect the safety of
flight, including adverse weather phe-

nomena, such as clear air turbulence,
thunderstorms, and low altitude wind
shear, for each route to be flown and
each airport to be used.
(c) During a flight, the aircraft dispatcher shall provide the pilot in command any additional available information of meteorological conditions
(including adverse weather phenomena,
such as clear air turbulence, thunderstorms, and low altitude wind shear),
and irregularities of facilities and services that may affect the safety of the
flight.
[Doc. No. 6258, 29 FR 19222, Dec. 31, 1964, as
amended by Amdt. 121-134, 42 FR 27573, May
31, 1977; Amdt. 121-144, 43 FR 22649, May 25,
1978; Amdt. 121-253, 61 FR 2614, Jan. 26, 1996]

Section 121.603 Facilities and services: Supplemental operations.
(a) Before beginning a flight, each
pilot in command shall obtain all
available current reports or information on airport conditions and irregularities of navigation facilities that
may affect the safety of the flight.
(b) During a flight, the pilot in command shall obtain any additional available information of meteorological
conditions and irregularities of facilities and services that may affect the
safety of the flight.
Section 121.605

Airplane equipment.

No person may dispatch or release an
airplane unless it is airworthy and is
equipped as prescribed in Section 121.303.
Section 121.607 Communication and navigation facilities: Domestic and flag operations.
(a) Except as provided in paragraph
(b) of this section for a certificate holder conducting flag operations, no person may dispatch an airplane over an
approved route or route segment unless
the communication and navigation facilities required by SectionSection 121.99 and 121.103
for the approval of that route or segment are in satisfactory operating condition.
(b) If, because of technical reasons or
other reasons beyond the control of a
certificate holder conducting flag operations, the facilities required by
SectionSection 121.99 and 121.103 are not available
over a route or route segment outside

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