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Federal Aviation Administration, DOT

§ 121.643

(i)

Airports in the United States.

The

weather minimums for takeoff pre-
scribed in part 97 of this chapter; or
where minimums are not prescribed for
the airport, 800–2, 900–1

⁄

, or 1,000–1.

(ii)

Airports outside the United States.

The weather minimums for takeoff pre-
scribed or approved by the government
of the country in which the airport is
located; or where minimums are not
prescribed or approved for the airport,
800–2, 900–1

⁄

, or 1,000–1.

(b) No pilot may take off from an al-

ternate airport unless the weather con-
ditions are at least equal to the mini-
mums prescribed in the certificate
holder’s operations specifications for
alternate airports.

[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 2615, Jan. 26, 1996]

§ 121.639

Fuel supply: All domestic op-

erations.

No person may dispatch or take off

an airplane unless it has enough fuel—

(a) To fly to the airport to which it is

dispatched;

(b) Thereafter, to fly to and land at

the most distant alternate airport
(where required) for the airport to
which dispatched; and

at normal cruising fuel consumption
or, for certificate holders who are au-
thorized to conduct day VFR oper-
ations in their operations specifica-
tions and who are operating non-
transport category airplanes type cer-
tificated after December 31, 1964, to fly
for 30 minutes at normal cruising fuel
consumption for day VFR operations.

[Doc. No. 6258, 29 FR 19222, Dec. 31, 1964, as
amended by Amdt. 121–251, 60 FR 65935, Dec.
20, 1995]

§ 121.641

Fuel supply: Nonturbine and

turbo-propeller-powered airplanes:
Flag operations.

(a) No person may dispatch or take

off a nonturbine or turbo-propeller-
powered airplane unless, considering
the wind and other weather conditions
expected, it has enough fuel—

(1) To fly to and land at the airport

to which it is dispatched;

(2) Thereafter, to fly to and land at

the most distant alternate airport
specified in the dispatch release; and

(3) Thereafter, to fly for 30 minutes

plus 15 percent of the total time re-
quired to fly at normal cruising fuel
consumption to the airports specified
in paragraphs (a) (1) and (2) of this sec-
tion or to fly for 90 minutes at normal
cruising fuel consumption, whichever
is less.

(b) No person may dispatch a nontur-

bine or turbo-propeller-powered air-
plane to an airport for which an alter-
nate is not specified under
§ 121.621(a)(2), unless it has enough fuel,
considering wind and forecast weather
conditions, to fly to that airport and
thereafter to fly for three hours at nor-
mal cruising fuel consumption.

§ 121.643

Fuel supply: Nonturbine and

turbo-propeller-powered airplanes:
Supplemental operations.

(a) Except as provided in paragraph

(b) of this section, no person may re-
lease for flight or takeoff a nonturbine
or turbo-propeller-powered airplane un-
less, considering the wind and other
weather conditions expected, it has
enough fuel—

(1) To fly to and land at the airport

to which it is released;

(2) Thereafter, to fly to and land at

the most distant alternate airport
specified in the flight release; and

(3) Thereafter, to fly for 45 minutes

(b) If the airplane is released for any

flight other than from one point in the
contiguous United States to another
point in the contiguous United States,
it must carry enough fuel to meet the
requirements of paragraphs (a) (1) and
(2) of this section and thereafter fly for
30 minutes plus 15 percent of the total
time required to fly at normal cruising
fuel consumption to the airports speci-
fied in paragraphs (a) (1) and (2) of this
section, or to fly for 90 minutes at nor-
mal cruising fuel consumption, which-
ever is less.

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