Beechcraft C-12C Operator And Technical Reference Manual page 811

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 qC
FEET
SL 8 5
2000 4 1
4000 0 -3
6000 -3 -7
8000 -7 -11
10,000 -11 -15
12,000 -15 -19
14,000 -19 -23
16,000 -23 -27
18,000 -27 -31
20,000 -31 -35
22,000 -35 -39
24,000 -39 -43
26,000 -43 -47
28,000 – – – – – –
– – – – – –
29,000
– – – – – –
31,000
– – – – – –
33,000
– – – – – –
35,000
Figure 7A-97. One Engine Inoperative Maximum Cruise Power, 1900 RPM, ISA – 10
ONE ENGINE INOPERATIVE
MAXIMUM CRUISE POWER
1900 RPM
ISA – 10 qC
TORQUE TOTAL
PER FUEL
ENGINE FLOW
% LB/HR
100 522
100 508
100 494
100 481
100 468
100 456
100 446
97 428
92 406
87 384
83 365
78 343 – – –
– – –
73 318
– – –
68 294
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
AIRSPEED
13,000 LB 12,000 LB
IAS TAS IAS TAS
185 183 188 186
183 186 185 188
180 189 183 191
178 192 181 195
175 194 178 198
172 197 175 201
169 200 173 204
163 198 167 203
155 195 160 201
146 190 153 198
135 182 145 194
– – – 134 187
– – –
– – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
TM 1-1510-218-10
~
KNOTS
11,000 LB 10,000 LB
IAS TAS IAS TAS
190 187 191
187 191 189
185 194 187
183 197 185
181 200 183
178 204 180
175 207 178
170 207 173
165 206 167
157 204 161
151 202 155
143 198 148
132 189 140
– – – – – – 129
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
q
C
IF
189
192
196
199
203
206
209
211
201
209
208
206
200
192
7A-109