238 

14 CFR Ch. I (1–1–24 Edition) 

§ 121.641 

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 

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. 

(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. 

(c) No person may release a nontur-

bine or turbo-propeller-powered air-
plane to an airport for which an alter-
nate is not specified under § 121.623(b), 
unless it has enough fuel, considering 
wind and other weather conditions ex-
pected, to fly to that airport and there-
after to fly for three hours at normal 
cruising fuel consumption. 

[Doc. No. 6258, 29 FR 19222, Dec. 31, 1964, as 
amended by Amdt. 121–10, 30 FR 10025, Aug. 
12, 1965; Amdt. 121–251, 60 FR 65935, Dec. 20, 
1995] 

§ 121.645 Fuel supply: Turbine-engine 

powered airplanes, other than 
turbo propeller: Flag and supple-
mental operations. 

(a) Any flag operation within the 48 

contiguous United States and the Dis-
trict of Columbia may use the fuel re-
quirements of § 121.639. 

(b) For any certificate holder con-

ducting flag or supplemental oper-
ations outside the 48 contiguous United 
States and the District of Columbia, 
unless authorized by the Administrator 
in the operations specifications, no per-
son may release for flight or takeoff a 
turbine-engine powered airplane (other 
than a turbo-propeller powered air-
plane) unless, considering 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) After that, to fly for a period of 10 

percent of the total time required to 
fly from the airport of departure to, 
and land at, the airport to which it was 
released;