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14 CFR Ch. I (1–1–24 Edition)
§ 121.615
§ 121.615 Dispatch or flight release
over water: Flag and supplemental
operations.
(a) No person may dispatch or release
an aircraft for a flight that involves ex-
tended overwater operation unless ap-
propriate weather reports or forecasts
or any combination thereof, indicate
that the weather conditions will be at
or above the authorized minimums at
the estimated time of arrival at any
airport to which dispatched or released
or to any required alternate airport.
(b) Each certificate holder con-
ducting a flag or supplemental oper-
ation or a domestic operation within
the State of Alaska shall conduct ex-
tended overwater operations under IFR
unless it shows that operating under
IFR is not necessary for safety.
(c) Each certificate holder con-
ducting a flag or supplemental oper-
ation or a domestic operation within
the State of Alaska shall conduct other
overwater operations under IFR if the
Administrator determines that oper-
ation under IFR is necessary for safety.
(d) Each authorization to conduct ex-
tended overwater operations under
VFR and each requirement to conduct
other overwater operations under IFR
will be specified in the certificate hold-
er’s operations specifications.
[Doc. No. 6258, 29 FR 19222, Dec. 31, 1964, as
amended by Amdt. 121–33, 32 FR 13912, Oct. 6,
1967; Amdt. 121–253, 61 FR 2614, Jan. 26, 1996]
§ 121.617 Alternate airport for depar-
ture.
(a) If the weather conditions at the
airport of takeoff are below the landing
minimums in the certificate holder’s
operations specifications for that air-
port, no person may dispatch or release
an aircraft from that airport unless the
dispatch or flight release specifies an
alternate airport located within the
following distances from the airport of
takeoff:
(1)
Aircraft having two engines.
Not
more than one hour from the departure
airport at normal cruising speed in
still air with one engine inoperative.
(2)
Aircraft having three or more en-
gines.
Not more than two hours from
the departure airport at normal cruis-
ing speed in still air with one engine
inoperative.
(b) For the purpose of paragraph (a)
of this section, the alternate airport
weather conditions must meet the re-
quirements of the certificate holder’s
operations specifications.
(c) No person may dispatch or release
an aircraft from an airport unless he
lists each required alternate airport in
the dispatch or flight release.
§ 121.619 Alternate airport for destina-
tion: IFR or over-the-top: Domestic
operations.
(a) No person may dispatch an air-
plane under IFR or over-the-top unless
he lists at least one alternate airport
for each destination airport in the dis-
patch release. When the weather condi-
tions forecast for the destination and
first alternate airport are marginal at
least one additional alternate must be
designated. However, no alternate air-
port is required if for at least 1 hour
before and 1 hour after the estimated
time of arrival at the destination air-
port the appropriate weather reports or
forecasts, or any combination of them,
indicate—
(1) The ceiling will be at least 2,000
feet above the airport elevation; and
(2) Visibility will be at least 3 miles.
(b) For the purposes of paragraph (a)
of this section, the weather conditions
at the alternate airport must meet the
requirements of § 121.625.
(c) No person may dispatch a flight
unless he lists each required alternate
airport in the dispatch release.
[Doc. No. 6258, 29 FR 19222, Dec. 31, 1964, as
amended by Amdt. 121–159, 45 FR 41594, June
19, 1980]
§ 121.621 Alternate airport for destina-
tion: Flag operations.
(a) No person may dispatch an air-
plane under IFR or over-the-top unless
he lists at least one alternate airport
for each destination airport in the dis-
patch release, unless—
(1) The flight is scheduled for not
more than 6 hours and, for at least 1
hour before and 1 hour after the esti-
mated time of arrival at the destina-
tion airport, the appropriate weather
reports or forecasts, or any combina-
tion of them, indicate the ceiling will
be:
(i) At least 1,500 feet above the lowest
circling MDA, if a circling approach is