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|  STUDENT GUIDE
VISUAL NAVIGATION
T-39 FUEL FLOW
T-39 NORMAL THRUST CLIMB
TWO ENGINES
TWO ENGINES
ALT
ALT
TIME
FUEL
DIST
TAS
PPH
SL
300
3000
(1000's)
(mins)
(lbs.)
(NM)
10,000'
300
2400
15,000'
300
2200
10
3
200
12
15
5
350
22
360
2300
20
7
430
32
20,000'
360
2000
21
8
480
38
23,000'
360
1900
23
9
500
40
390
2100
420
2200
25
10
600
48
25,000'
360
1800
27
12
650
57
30
13
780
72
390
1950
33
16
800
80
420
2100
35
18
920
102
27,000'
360
1750
37
20
1000
118
390
1850
39
26
1150
147
420
2000
41
31
1500
233
29,000'
360
1650
43
37
1680
265
420
1900
45
44
1800
305
31,000'
360
1500
390
1650
420
1800
33,000'
420
1750
35,000'
390
1550
420
1650
37,000'
390
1500
420
1600
39,000'
390
1450
420
1550
41,000'
390
1350
420
1450
43,000'
420
1300
45,000'
420
1200
NOTE: Data in this figure to be used only to work the problems in this text. The In Flight
Guide is the only approved source for flight computations.)
1. START/TAXI/TAKEOFF CONSUMES 400# (JP-5) AND IS NOT INCLUDED IN ABOVE FIGURES.
2. FUEL REQUIRED FOR APPROACH: 400#.
3. RESERVE FUEL COMPUTED AT 175 KIAS, 10K MSL, 1600 PPH FOR A 14,000# AIRCRAFT IS 550#.
4. TOTAL FUEL: 7200# (JP-5), 6900# (JP-4) 3+10 FOR VNAV AND 4+00 FOR INAV.
5. DESCENT: ALLOW 30#, 2 MINUTES, AND 10 NM PER 5000' OF ALTITUDE.
6. ENROUTE BETWEEN LOW-LEVELS:
10.5K, 300 KTAS, 2400 PPH
16.5K, 300 KTAS, 2000 PPH
Figure 6-15
6-20
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