3.2.3.5. FUEL RESERVES
Part of any extra fuel transported to a destination is just burnt off in carrying itself. It is not uncommon for operators to uplift additional “discretionary” fuel beyond that called for by the Flight Plan. This policy is often simply a result of a lack of faith in the fuel usage predictions made by the flight planning system. Of course, when reserves beyond those described in the flight plan are added, the flight plan predictions automatically become invalid.
Rese
rve
require
m
e
n
ts
vary
between
avia
tion
authorities.
So
me
Aviation
Authori
t
ie
s
allow
a
procedur
e
Reference documents
known a
s
“Reclearan
ce in
Fl
igh
t
”
Getting to Grips with Fuel Economy – Issue 4 October 2004 on som
e
routes.
Th
is procedu
re
Getting to Grips with Aircraft Performance – Issue 1 January can redu
ce
the reserves required
2002
Point of contact: fltops.perfo@airbus.com
for a
give
n route
a
n
d shou
ld
be
considere
d
when app
r
opria
t
e. All
fuel rese
rves, in
clu
d
ing discretionary rese
rves should be
included
in
the Fligh
t
Plan.
$100,000 $80,000 $60,000 $40,000 $20,000
$0
Annual Additional Cost(US$)
Data -Mission A
Annual cycles: 1800
Annual Flight Hours: 2700
Average sector length (Hours): 1.5
Additional fuel per sector (KGs): 41
Data -Mission B
Annual cycles: 1500
Annual Flight Hours: 3000
Average sector length (Hours): 2
Additional fuel per sector (KGs): 57
Data -Mission C
Annual cycles: 1100
Annual Flight Hours: 3300
Average sector length (Hours): 3
Additional fuel per sector (KGs): 95
Figu
re 3-
5
Additional
1000 k
g
of fuel r
e
ser
v
e
Aircraft Operations Fuel Conservation Action Overview The following actions have been described in the preceding sections and should be implemented to ensure a systematic reduction in fuel consumption on each flight: 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Family performance retention and fuel savings(12)
