Beechcraft C-12C Operator And Technical Reference Manual page 797

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 29
2,000 25
4,000 21
6,000 18
8,000 14
10,000 10
12,000 6
14,000 2
16,000 -2
18,000 -6
20,000 -10
22,000 -14
24,000 -17
26,000 -21
28,000 -25
29,000 -27
31,000 -31
33,000 -35
35,000 -39
Figure 7A-86. Maximum Range Power, 1700 RPM, ISA + 10
MAXIMUM RANGE POWER
1700 RPM
ISA + 10 qC
11,000 POUNDS
OAT TORQUE FUEL
PER FLOW
ENGINE TOTAL
qC
% LB/HR
25 73 800
21 71 760
17 68 714
13 65 670
9 62 626
5 58 582
1 57 552
-3 55 520
-7 53 490
-11 51 466
-15 50 444
-19 50 434
-23 50 424
-27 51 416
-31 50 404
-32 50 398
-36 50 398
-40 51 404
-44 – – – – – –
IAS TAS TORQUE
PER
ENGINE
KTS KTS %
209 214 71
205 215 68
199 215 64
193 215 61
187 215 58
180 214 54
177 216 53
171 216 50
166 217 48
161 217 46
156 218 44
153 221 44
152 226 44
150 231 45
146 234 46
144 234 46
141 239 45
140 246 45
– – – – – – 46
q
C (Sheet 2 of 2)
TM 1-1510-218-10
IN
10,000 POUNDS
FUEL IAS TAS
FLOW
TOTAL
LB/HR KTS KTS
788 208 212
744 202 213
694 196 212
650 190 212
604 183 211
558 176 209
526 173 211
494 167 211
462 161 210
434 155 210
410 150 209
398 147 212
390 146 218
382 144 223
376 143 229
374 142 231
364 138 233
362 135 237
368 134 244
7A-95