Boeing 737 - Page 176

737 Operations Manual
Performance Inflight -
General
737-500/CFM56-3_20K
Copyright © The Boeing Company. See title page for details.
PI.30.18 D6-27370-400E-TBCE
Assumed Temperature Reduced Thrust (18.5K Derate)
Maximum Assumed Temperature (Table 1)
Based on 25% Takeoff Thrust Reduction
Maximum Takeoff %N1 (Table 2)
Based on engine bleed to packs on (Auto) and engine anti-ice on or off
OAT
(°C)
PRESS ALT (1000 FT)
OAT
(°F)
PRESS ALT (1000 FT)
-1012345678 -1012345678
55 69 69 69 69 130 155 155 155 155
50 67 67 66 65 66 66 120 152 151 149 148 149 149
45 65 65 64 63 63 62 62 62 62 110 148 148 145 144 144 142 142 141 141
40 63 63 62 61 61 60 60 59 58 57 100 145 144 142 140 140 138 138 136 134 132
35 62 61 60 59 59 58 58 57 56 54 90 142 141 139 137 136 134 134 132 130 128
30 61 60 59 58 57 56 56 55 54 52 80 142 140 137 135 135 132 131 128 126 124
25 61 60 58 57 57 56 55 53 52 50 70 142 140 137 135 134 132 131 127 124 120
20 & 61 60 58 57 57 56 55 53 51 49 60 & 142 140 137 135 134 132 131 127 124 120
BELOW BELOW
ASSUMED TEMP AIRPORT PRESSURE ALTITUDE (FT)
°C °F -1000 0 1000 2000 3000 4000 5000 6000 7000 8000
75 167 76.8 76.6 76.5 76.6 78.3
70 158 79.6 79.5 79.4 79.4 80.8 80.9
65 149 82.3 82.4 82.2 82.2 83.2 83.3 84.1 83.3 82.2 81.0
60 140 84.9 85.2 85.0 84.9 85.6 85.6 86.3 85.5 84.4 83.3
55 131 87.2 87.9 87.7 87.6 87.9 87.9 88.5 87.7 86.6 85.5
50 122 87.8 88.7 89.4 90.1 90.2 90.2 90.6 89.8 88.7 87.6
45 113 88.8 89.3 90.0 90.6 91.3 92.0 92.6 91.9 90.8 89.7
40 104 89.1 90.0 90.6 91.2 91.8 92.7 93.3 93.1 92.6 91.7
35 95 89.5 90.4 91.2 91.8 92.4 93.2 93.8 93.6 93.1 92.6
30 86 89.2 90.6 91.2 91.9 92.7 93.7 94.3 94.1 93.6 93.1
25 77 88.5 89.9 90.7 91.5 92.3 93.1 94.2 94.5 94.1 93.6
20 68 87.8 89.1 89.9 90.7 91.5 92.3 93.4 93.8 93.7 93.8
15 59 87.0 88.3 89.2 90.0 90.8 91.5 92.6 92.9 92.9 93.0
MINIMUM
ASSUMED TEMP
°C (°F)
32(90) 30(86) 28(82) 26(79) 24(75) 29(85) 27(81) 25(77) 23(73) 21(70)
With engine bleed to packs off, increase %N1 by 1.0.
December 07, 2001