Beechcraft C-12C Operator And Technical Reference Manual page 816

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 55
2000 51
4000 47
6000 43
8000 39
10,000 35
12,000 31
14,000 27
16,000 23
18,000 19
20,000 16
22,000 12
– – – – – –
24,000
– – – – – –
26,000
– – – – – –
28,000
– – – – – –
29,000
– – – – – –
31,000
– – – – – –
33,000
– – – – – –
35,000
Figure 7A-102. One Engine Inoperative Maximum Cruise Power, 1900 RPM, ISA + 37
7A-114
ONE ENGINE INOPERATIVE
MAXIMUM CRUISE POWER
TORQUE TOTAL
PER
FUEL
ENGINE FLOW
qC
% LB/HR
52 90 503
48 88 481
44 87 461
40 84 438
36 81 411
32 77 384
28 74 363
24 72 346
20 70 331
16 68 318
12 67 306
8 63 289
– – – – – –
– – – – – –
– – – – – –
– – – – – –
– – – – – –
– – – – – –
– – – – – –
1900 RPM
ISA + 37 qC
AIRSPEED
13,000 LB 12,000 LB
IAS TAS IAS
170 181 173
165 182 169
161 182 165
155 181 160
147 178 153
138 172 146
127 164 139
– – – – – –
131
– – – – – –
120
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
~
KNOTS
11,000 LB 10,000 LB
TAS IAS TAS IAS
185 176 188 178
186 172 189 174
187 168 191 171
187 163 190 167
185 158 190 161
182 151 189 156
179 145 187 150
175 140 186 145
166 133 183 140
– – –
126 179 135
– – – – – – – – –
129
– – – – – – – – –
120
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
IF
TAS
190
192
194
195
194
194
193
193
192
191
189
182
– – –
– – –
– – –
– – –
– – –
– – –
– – –
q
C