Beechcraft C-12C Operator And Technical Reference Manual page 812

TM 1-1510-218-10
NOTES: DURING OPERATION WITH ICE VANE EXTENDED, TORQUE WILL DECREASE.
ORIGINAL POWER IS NOT OR CANNOT BE RESET, TRUE AIRSPEED WILL DECREASE
APPROXIMATELY 20 KNOTS AND FUEL FLOW WILL DECREASE APPROXIMATELY 7%. IF
ORIGINAL POWER IS RESET, TRUE AIRSPEED WILL BE UNCHANGED AND FUEL FLOW
WILL INCREASE APPROXIMATELY 30 LB/HR/ENG.
IOAT, TORQUE, AND FUEL FLOW BASED ON 12,000 POUNDS.
TO OBTAIN FUEL FLOW PER ENGINE, DIVIDE THE TOTAL FUEL FLOW VALUE FOR THE
CORRESPONDING ALTITUDE BY TWO.
PRESSURE
IOAT OAT
ALT
qC
FEET
SL 18
2000 14
4000 11
6000 7
8000 3
10,000 -1
12,000 -5
14,000 -9 -13
16,000 -13 -17
18,000 -17 -21
20,000 -21 -25
22,000 -26 -29
24,000 -30 -33
26,000 -33 -37
– – – – – –
28,000
– – – – – –
29,000
– – – – – –
31,000
– – – – – –
33,000
– – – – – –
35,000
Figure 7A-98. One Engine Inoperative Maximum Cruise Power, 1900 RPM, ISA
7A-110
ONE ENGINE INOPERATIVE
MAXIMUM CRUISE POWER
TORQUE TOTAL
PER FUEL
ENGINE FLOW
qC
% LB/HR
15 100 525
11 100 511
7 100 497
3 100 483
-1 100 469
-5 100 457
-9 97 436
93 412
88 390
83 369
79 351
74 329
69 305
65 283
– – – – – –
– – – – – –
– – – – – –
– – – – – –
– – – – – –
1900 RPM
ISA
AIRSPEED
13,000 LB 12,000 LB
IAS TAS IAS
184 185 186
181 188 184
179 190 181
176 193 179
173 196 176
170 199 174
165 198 169
157 195 162
148 190 154
138 183 146
119 163 137
– – – – – –
123
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
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~
KNOTS
11,000 LB 10,000 LB
TAS IAS TAS IAS
187 188 189 190
190 186 192 188
193 184 196 186
196 181 199 183
200 179 202 181
202 176 206 179
203 172 207 174
201 166 206 169
198 159 204 163
194 152 201 156
188 145 198 150
175 136 193 143
– – –
123 180 133
– – – – – – – – –
121
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
IF
TAS
191
194
198
201
205
208
210
209
208
206
205
202
196
185
– – –
– – –
– – –
– – –
– – –