737 Operations Manual
Performance Inflight -
General
737-400/CFM56-3_23.5K
Copyright © The Boeing Company. See title page for details.
D6-27370-400E-TBCE PI.20.19
Assumed Temperature Reduced Thrust (22K 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 74 71 71 130 165 159 159
50 71 69 68 68 69 70 120 160 155 154 154 155 157
45 69 67 66 66 67 67 67 68 70 110 155 151 149 149 150 151 151 152 155
40 67 65 64 64 64 64 64 64 66 68 100 151 148 145 145 145 145 147 145 149 151
35 65 63 62 62 62 61 61 62 63 64 90 146 143 141 141 140 140 140 140 143 144
30 63 61 60 60 59 59 59 59 60 61 80 146 142 139 138 136 135 135 135 137 138
25 63 61 59 58 57 56 56 56 57 58 70 146 142 138 136 135 131 129 129 130 132
20 63 61 59 58 57 55 53 54 54 55 60 146 142 138 136 135 131 127 127 126 126
15 &
BELOW
63 61 59 58 57 55 53 53 52 52
50 &
BELOW
146 142 138 136 135 131 127 127 126 126
ASSUMED TEMP AIRPORT PRESSURE ALTITUDE (FT)
°C °F -1000 0 1000 2000 3000 4000 5000 6000 7000 8000
75 167 86.0 85.4 85.4
70 158 87.8 87.6 87.4 87.4 87.6
65 149 89.7 89.7 89.4 89.2 89.2 89.2 89.3 89.5 89.9 90.4
60 140 91.6 91.8 91.3 91.0 90.8 90.7 90.7 90.8 91.1 91.4
55 131 93.1 93.8 93.2 92.7 92.4 92.1 92.1 92.0 92.1 92.3
50 122 93.7 94.3 94.3 94.3 93.9 93.6 93.4 93.2 93.2 93.2
45 113 94.0 94.7 94.7 94.6 94.6 94.6 94.7 94.4 94.2 94.0
40 104 94.4 95.2 95.2 95.1 95.0 95.1 95.1 95.2 95.1 94.9
35 95 95.0 95.6 95.6 95.6 95.5 95.7 95.7 95.7 95.6 95.5
30 86 95.2 96.1 96.1 96.0 96.0 96.3 96.2 96.1 96.0 96.0
25 77 94.4 96.6 96.5 96.5 96.7 96.6 96.6 96.5 96.4
20 68 93.6 97.1 97.1 97.1 97.0 96.9
15 59 92.8 97.6 97.5 97.5
MINIMUM
ASSUMED TEMP
°C (°F)
32(90) 30(86) 28(82) 26(79) 24(75) 22(72) 20(68) 18(64) 16(61) 15(59)
With engine bleed to packs off, increase %N1 by 1.0.
June 07, 2002
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