Weight and
Balance Data
CSP–520N–1
MD 520N (500N) ROTORCRAFT FLIGHT MANUAL
TM
Original
6–15
460
440
420
400
380
360
340
320
300
280
260
240
220
200
180
160
140
120
100
80
60
40
20
0
90
90.5
91
91.5
92
92.5
93
93.5
94
94.5
95
95.5
96
96.5
97
97.5
98
98.5
99
NOTES:
1.
WEIGHTS
AND MOMENTS BASED ON JET
A
FUEL.
2.
T
OT
AL
WEIGHT
OF FUEL
IS
DEPENDENT
UPON
THE SPECIFIC GRA
VITY
AND
TEMPERA
TURE
V
ARIA
TION SHOULD BE
ANTICIP
A
TED IN
GAUGE READINGS WHEN
T
ANKS
ARE
FULL.
3.
FUEL
CG V
ARIES
WITH
QUANTITY
4.
MAXIMUM
FUEL
QUANTITY
IS 435 POUNDS
5.
MAXIMUM USABLE FUEL
QUANTITY
IS
422 POUNDS.
OPTIIONAL
SELF SEALING
T
ANKS
1.
MAXIMUM
FUEL
QUANTITY
IS 420.5 POUNDS
2.
MAXIMUM USABLE FUEL
QUANTITY
IS
407.5 POUNDS
FUEL
WT
AND CG CUR
VE
USING
JET
A
LONGITUDINAL
C.G. (INCHES)
FUEL QUANTITY
(GALLONS)
65
60
55
50
45
40
35
30
25
20
15
10
5
0
(ASTM D
–
1655)
A
T
6.8 POUNDS PER GALLON
EXAMPLE: Find fuel moment for 340 lb fuel:
1. Enter chart at 340 lb on fuel weight scale. From that point, move to right along the 340 lb line until
reaching the fuel weight CG curve. Now move down to the longitudinal CG scale to find the fuel
station (CG) of approximately 96.80
–
in.
2. Multiply 96.80
–
in (station) by 340 lb (fuel weight) to arrive at 32,912 in
–
lb (moment).
F05–034
FUEL WEIGHT
POUNDS
Figure 6–6. Fuel Station Diagram (Jet–A at 6.8 Pounds per Gallon) (Sheet 1 of 2)
