9 

Federal Aviation Administration, DOT 

§ 1.1 

External load means a load that is 

carried, or extends, outside of the air-
craft fuselage. 

External-load attaching means means 

the structural components used to at-
tach an external load to an aircraft, in-
cluding external-load containers, the 
backup structure at the attachment 
points, and any quick-release device 
used to jettison the external load. 

Final approach fix (FAF) defines the 

beginning of the final approach seg-
ment and the point where final seg-
ment descent may begin. 

Final takeoff speed means the speed of 

the airplane that exists at the end of 
the takeoff path in the en route con-
figuration with one engine inoperative. 

Fireproof— 
(1) With respect to materials and 

parts used to confine fire in a des-
ignated fire zone, means the capacity 
to withstand at least as well as steel in 
dimensions appropriate for the purpose 
for which they are used, the heat pro-
duced when there is a severe fire of ex-
tended duration in that zone; and 

(2) With respect to other materials 

and parts, means the capacity to with-
stand the heat associated with fire at 
least as well as steel in dimensions ap-
propriate for the purpose for which 
they are used. 

Fire resistant— 
(1) With respect to sheet or struc-

tural members means the capacity to 
withstand the heat associated with fire 
at least as well as aluminum alloy in 
dimensions appropriate for the purpose 
for which they are used; and 

(2) With respect to fluid-carrying 

lines, fluid system parts, wiring, air 
ducts, fittings, and powerplant con-
trols, means the capacity to perform 
the intended functions under the heat 
and other conditions likely to occur 
when there is a fire at the place con-
cerned. 

Flame resistant means not susceptible 

to combustion to the point of propa-
gating a flame, beyond safe limits, 
after the ignition source is removed. 

Flammable,  with respect to a fluid or 

gas, means susceptible to igniting read-
ily or to exploding. 

Flap extended speed means the highest 

speed permissible with wing flaps in a 
prescribed extended position. 

Flash resistant means not susceptible 

to burning violently when ignited. 

Flightcrew member means a pilot, 

flight engineer, or flight navigator as-
signed to duty in an aircraft during 
flight time. 

Flight level means a level of constant 

atmospheric pressure related to a ref-
erence datum of 29.92 inches of mer-
cury. Each is stated in three digits 
that represent hundreds of feet. For ex-
ample, flight level 250 represents a bar-
ometric altimeter indication of 25,000 
feet; flight level 255, an indication of 
25,500 feet. 

Flight plan means specified informa-

tion, relating to the intended flight of 
an aircraft, that is filed orally or in 
writing with air traffic control. 

Flight simulation training device 

(FSTD)  means a flight simulator or a 
flight training device. 

Flight time means: 
(1) Pilot time that commences when 

an aircraft moves under its own power 
for the purpose of flight and ends when 
the aircraft comes to rest after land-
ing; or 

(2) For a glider without self-launch 

capability, pilot time that commences 
when the glider is towed for the pur-
pose of flight and ends when the glider 
comes to rest after landing. 

Flight training device (FTD) means a 

replica of aircraft instruments, equip-
ment, panels, and controls in an open 
flight deck area or an enclosed aircraft 
cockpit replica. It includes the equip-
ment and computer programs nec-
essary to represent aircraft (or set of 
aircraft) operations in ground and 
flight conditions having the full range 
of capabilities of the systems installed 
in the device as described in part 60 of 
this chapter and the qualification per-
formance standard (QPS) for a specific 
FTD qualification level. 

Flight visibility means the average for-

ward horizontal distance, from the 
cockpit of an aircraft in flight, at 
which prominent unlighted objects 
may be seen and identified by day and 
prominent lighted objects may be seen 
and identified by night. 

Foreign air carrier means any person 

other than a citizen of the United 
States, who undertakes directly, by 
lease or other arrangement, to engage 
in air transportation. 

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