Boeing 737 - Page 120

737 Operations Manual
Performance Inflight -
All Engines
737-400/CFM56-3_23.5K
Copyright © The Boeing Company. See title page for details.
PI.21.6 D6-27370-400E-TBCE
All Engi ne
Long Range Cruise Wind-Altitude Trade
Descent
Based on .74/250 descent speed
Holding
Flaps Up
PRESSURE
ALTITUDE
(1000 FT)
CRUISE WEIGHT (1000 KG)
68 66 64 62 60 58 56 54 52 50 48 46 44 42 40 38 36
37 14810000000
35 952002681012131414
33 952101371217202326272930
31 210134914192531353841434445
29 1 2 5 8 12172228333945505457596061
27 8 12151725303541485561666971747577
25 19 24 28 34 39 44 51 57 63 70 78 82 86 89 92 94 96
23 32 37 42 48 53 59 65 72 79 86 94 99 103 106 109 112 113
The above wind factor tables are for calculation of wind required to maintain present range capability at new
pressure altitude, i.e., break-even wind.
Method:
1. Read wind factors for present and new altitudes from table.
2. Determine difference (new altitude wind factor minus present altitude wind factor); This difference may
be negative or positive.
3. Break-even wind at new altitude is present altitude wind plus difference from step 2.
PRESSURE ALT (1000 FT) 212325272931333537
DISTANCE (NM) 66 72 78 85 91 97 103 109 114
TIME (MINUTES) 151618181920212223
WEIGHT
(1000 KG)
PRESSURE ALTITUDE (FT)
1500 5000 10000 15000 20000 25000 30000 35000 37000
66
%N1 63.7 66.7 70.8 74.7 78.5 82.3 86.1
KIAS 255 256 259 261 263 265 263
FF/ENG 1500 1480 1460 1440 1420 1420 1420
62
%N1 62.1 64.9 69.2 73.2 77.0 80.8 84.6 90.6
KIAS 247 248 250 253 255 257 256 249
FF/ENG 1410 1390 1370 1350 1340 1330 1330 1410
58
%N1 60.5 63.1 67.4 71.4 75.4 79.2 83.0 87.5 92.3
KIAS 239 240 241 244 246 248 248 243 239
FF/ENG 1330 1310 1290 1270 1250 1250 1240 1260 1370
54
%N1 58.9 61.3 65.4 69.6 73.6 77.5 81.3 85.3 88.2
KIAS 231 231 232 235 237 239 241 238 234
FF/ENG 1260 1230 1210 1190 1170 1160 1150 1160 1200
50
%N1 57.2 59.5 63.3 67.6 71.7 75.6 79.5 83.3 85.5
KIAS 224 223 223 225 227 230 232 230 228
FF/ENG 1180 1150 1130 1110 1090 1080 1070 1070 1080
46
%N1 55.5 57.7 61.1 65.4 69.6 73.6 77.5 81.4 83.3
KIAS 216 214 214 215 218 220 222 222 221
FF/ENG 1110 1070 1050 1030 1010 1000 980 980 990
42
%N1 53.7 56.0 59.3 63.3 67.5 71.5 75.4 79.3 81.2
KIAS 210 210 210 210 210 210 212 213 212
FF/ENG 1040 1010 990 960 930 920 900 900 900
38
%N1 52.4 54.7 57.9 61.5 65.7 69.7 73.5 77.4 79.3
KIAS 210 210 210 210 210 210 210 210 210
FF/ENG 990 960 940 900 880 860 840 830 840
This table includes 5% additional fuel for holding in a racetrack pattern.
June 08, 2001