Beechcraft C-12C Operator And Technical Reference Manual page 815

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 48 45
2000 44 41
4000 40 37
6000 37 33
8000 33 29
10,000 28 25
12,000 24 21
14,000 20 17
16,000 16 13
18,000 13 9
20,000 8 5
22,000 5 1
– – – – – –
24,000
– – – – – –
26,000
– – – – – –
28,000
– – – – – –
29,000
– – – – – –
31,000
– – – – – –
33,000
– – – – – –
35,000
Figure 7A-101. One Engine Inoperative Maximum Cruise Power, 1900 RPM, ISA + 30
ONE ENGINE INOPERATIVE
MAXIMUM CRUISE POWER
1900 RPM
ISA + 30 qC
TORQUE TOTAL
PER FUEL
ENGINE FLOW
% LB/HR
97 521
94 499
92 478
90 453
86 425
82 397
78 375
76 358
– – –
73 342
– – –
72 329
– – –
70 316
– – –
66 297
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
AIRSPEED
13,000 LB 12,000 LB
IAS TAS IAS TAS
176 186 179 189
172 187 175 190
167 188 171 192
162 187 166 192
154 184 159 190
146 180 152 187
137 175 145 185
126 166 138 182
– – –
130 177
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
– – – – – – – – –
TM 1-1510-218-10
~
KNOTS
11,000 LB 10,000 LB
IAS TAS IAS TAS
182 192 184
178 193 180
174 195 177
169 195 172
163 194 166
157 193 160
151 192 155
145 191 150
139 189 145
133 187 140
125 181 134
– – – – – –
125
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
– – – – – – – – – – – –
q
C
IF
194
196
198
199
198
198
197
197
197
196
195
189
7A-113