Beechcraft C-12C Operator And Technical Reference Manual page 814

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 38
2000 35
4000 31
6000 27
8000 23
10,000 19
12,000 15
14,000 11
16,000 7
18,000 2
20,000 -1
22,000 -6
24,000 -9 -13
– – – – – –
26,000
– – – – – –
28,000
– – – – – –
29,000
– – – – – –
31,000
– – – – – –
33,000
– – – – – –
35,000
Figure 7A-100. One Engine Inoperative Maximum Cruise Power, 1900 RPM, ISA + 20
7A-112
ONE ENGINE INOPERATIVE
MAXIMUM CRUISE POWER
TORQUE TOTAL
PER
FUEL
ENGINE FLOW
qC
% LB/HR
35 100 530
31 100 515
27 100 500
23 97 475
19 92 447
15 88 418
11 84 394
7 82 376
3 79 359
-1 76 343
-5 73 327
-9 69 307
64 285
– – – – – –
– – – – – –
– – – – – –
– – – – – –
– – – – – –
– – – – – –
1900 RPM
ISA + 20 qC
AIRSPEED
13,000 LB 12,000 LB
IAS TAS IAS
181 188 183
178 191 181
176 194 178
170 193 173
163 191 167
155 188 160
148 185 153
140 180 147
129 172 140
– – – – – –
132
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
~
KNOTS
11,000 LB 10,000 LB
TAS IAS TAS IAS
191 185 193 187
194 183 196 185
197 181 200 183
197 176 200 178
196 170 200 173
194 164 198 167
192 158 197 161
190 153 197 157
187 147 196 152
182 141 194 146
– – –
133 189 140
– – –
120 178 132
– – – – – – – – –
120
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
IF
TAS
195
198
202
203
203
202
202
202
202
201
199
195
184
– – –
– – –
– – –
– – –
– – –
– – –
q
C