Beechcraft C-12C Operator And Technical Reference Manual page 798

TM 1-1510-218-10
NOTES: DURING OPERATION WITH ICE VANES EXTENDED, TORQUE WILL DECREASE.
ORDER TO MAINTAIN MAXIMUM RANGE CONFIGURATION, DO NOT RESET POWER TO
ORIGINAL SETTING. FUEL FLOW WILL REMAIN ABOUT THE SAME, BUT TRUE AIRSPEED
WILL BE REDUCED APPROXIMATELY 10 KNOTS.
TO OBTAIN FUEL FLOW PER ENGINE, DIVIDE THE TOTAL FUEL FLOW VALUE FOR THE
CORRESPONDING ALTITUDE BY TWO.
WEIGHT ➜
PRESSURE IOAT
ALT
qC
FEET
SL 39
2,000 35
4,000 31
6,000 28
8,000 24
10,000 20
12,000 16
14,000 12
16,000 8
18,000 4
20,000 0
22,000 -3
24,000 -7
26,000 -11
28,000 -15
29,000 -17
31,000 – – –
33,000 – – –
35,000 – – –
Figure 7A-87. Maximum Range Power, 1700 RPM, ISA + 20
7A-96
MAXIMUM RANGE POWER
1700 RPM
ISA + 20 qC
13,000 POUNDS
OAT TORQUE FUEL
PER FLOW
ENGINE TOTAL
qC
% LB/HR
35 73 810
31 72 722
27 70 734
23 69 698
19 67 660
15 65 622
11 63 588
7 62 562
3 61 538
-1 60 516
-5 60 502
-9 59 490
-13 60 484
-17 61 484
-21 61 480
-22 – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
IAS TAS TORQUE
PER
ENGINE
KTS KTS %
205 213 71
201 215 69
197 217 69
193 219 67
188 220 65
183 222 63
179 223 61
174 224 60
170 226 59
166 228 58
163 231 58
159 234 57
157 239 55
156 245 55
152 247 56
– – – – – – 56
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
q
C (Sheet 1 of 2)
IN
12,000 POUNDS
FUEL IAS TAS
FLOW
TOTAL
LB/HR KTS KTS
798 204 212
758 200 214
726 197 217
688 193 219
650 188 221
610 183 222
578 179 223
550 175 225
526 171 227
504 167 229
488 163 232
472 159 234
452 154 234
444 151 238
446 149 244
444 147 245
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –