Cirrus SR20 Specifications Page 231
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Cirrus Design Section 7
SR20 Airplane and Systems Description
P/N 11934-004 7-57
Environmental System
Standard cabin heating and ventilation is accomplished by supplying
conditioned air from the heat exchanger for heating and windshield
defrost and fresh outside air for ventilation. The environmental system
consists of a fresh air inlet in the lower RH cowl, a heat exchanger
around the RH engine exhaust muffler, an air mixing chamber, air
ducting for distribution, a distribution manifold, a windshield diffuser,
and crew and passenger air vents. An optional 3-speed blower fan is
available to supplement airflow when ram air may be inadequate such
as during ground operation.
28 VDC for Environmental System Control Panel operation is supplied
through the 5-amp CABIN AIR CONTROL breaker on A/C BUS 2.
The optional Blower Fan is powered by 28 VDC supplied through a 15-
amp CABIN FAN breaker on A/C BUS 2.
• Note •
To facilitate faster cabin cooling, prior to engine start leave the
cabin doors open for a short time to allow hot air to escape.
Cooling
Cabin cooling is provided by ram air admitted through the NACA inlet
on the RH lower cowl to the fresh air valve, mounted to the forward
side of the firewall. When the fresh air valve is open, the air flows into
the mixing chamber mounted to the forward side of the firewall. When
the fresh air valve is closed, the cooled air exits into the engine
compartment and is exhausted overboard with the engine cooling
airflow.
Heating
For cabin heating, fresh air enters the upper RH cowl inlet, flows
through the upper cowl, and is ducted to a heat exchanger
surrounding the RH engine exhaust muffler. The heated air is then
routed to the hot air valve, mounted to the forward side of the firewall,
which controls entry of hot air into the cabin distribution system. When
the valve is open, the air flows into the cabin mixing chamber. When
the valve is closed, the heated air exits into the engine compartment
and is exhausted overboard with the engine cooling airflow.
Original Issue
- CIRRUS DESIGN SR20 1
- Cirrus Design Corporation 2
- 4515 Taylor Circle 2
- Duluth, MN 55811 2
- List of Effective Pages 3
- B P/N 11934-004 4
- SR20 List of Effective Pages 4
- P/N 11934-004 C 5
- Foreword 7
- The Handbook 8
- Revising the Handbook 9
- Identifying Revised Material 9
- Revision Service 10
- Supplements 10
- Retention of Data 11
- Warnings, Cautions, and Notes 11
- Section 1 13
- Figure 1-1 16
- Airplane Three View 16
- Figure 1-2 17
- Airplane Interior Dimensions 17
- Figure 1-3 18
- Turning Radius 18
- The Airplane 19
- 1-8 P/N 11934-004 20
- Section 1 Cirrus Design 20
- General SR20 20
- Meteorological Terminology 22
- Engine Power Terminology 23
- 1-12 P/N 11934-004 24
- Cirrus Design Section 1 25
- SR20 General 25
- P/N 11934-004 1-13 25
- Section 2 27
- Limitations 27
- 2-2 P/N 11934-004 28
- Section 2 Cirrus Design 28
- Limitations SR20 28
- Certification Status 29
- Airspeed Limitations 30
- Airspeed Indicator Markings 31
- Powerplant Limitations 32
- Weight Limits 33
- PowerPlant 34
- Electrical 35
- Center of Gravity Limits 36
- Maneuver Limits 37
- Flight Load Factor Limits 37
- Minimum Flight Crew 37
- Kinds of Operation 38
- Runway Surface 42
- Fuel Limits 43
- Altitude Limits 43
- Environmental Conditions 43
- Maximum Occupancy 43
- Systems and Equipment Limits 44
- Cirrus Design Section 2 45
- SR20 Limitations 45
- P/N 11934-004 2-19 45
- Enhanced Vision System 46
- Other Limitations 47
- Placards 48
- EXTERNAL 49
- Figure 2-4 50
- (Sheet 3 of 6) 50
- DAY - NIGHT - VFR - IFR 51
- FOLLOWING FLIGHT OPERATIONS: 51
- GRAB HERE 52
- IN INJURY OR DEATH 53
- Section 3 55
- Emergency Procedures 55
- 3-2 P/N 11934-004 56
- Section 3 Cirrus Design 56
- Emergency Procedures SR20 56
- Emergency Procedures Guidance 58
- Circuit Breakers 59
- Memory Items 59
- 3-6 P/N 11934-004 60
- Engine Failures 61
- Engine Failure In Flight 62
- Airstart 63
- Smoke and Fire 64
- Cirrus Design Section 3 65
- SR20 Emergency Procedures 65
- P/N 11934-004 3-11 65
- Wing Fire In Flight 66
- Engine Fire During Start 66
- Smoke and Fume Elimination 67
- Emergency Descent 68
- Forced Landings 69
- Ditching 70
- Engine System Emergencies 71
- Oil Temperature High 72
- Engine Speed High 72
- P/N 11934-004 3-19 73
- Engine Partial Power Loss 74
- P/N 11934-004 3-21 75
- Propeller System Emergencies 76
- Fuel System Emergencies 77
- Electrical System Emergencies 78
- Low Voltage on Essential Bus 79
- Low Alternator 1 Output 80
- Low Alternator 2 Output 80
- PFD Display Failure 81
- Emergency Exit 82
- Unusual Attitude Emergencies 83
- 3-30 P/N 11934-004 84
- Other Emergencies 85
- Starter Engaged Annunciation 86
- CAPS Deployment 87
- 3-34 P/N 11934-004 88
- P/N 11934-004 3-35 89
- Section 3A 91
- Abnormal Procedures 91
- 3A-2 P/N 11934-004 92
- Section 3A Cirrus Design 92
- Abnormal Procedures SR20 92
- Abnormal Procedures Guidance 93
- Flight Environment 94
- Abnormal Landings 95
- Engine System 96
- Fuel System (Cont) 98
- Figure 3A-1 99
- Circuit Breaker Panel 99
- Integrated Avionics System 100
- MFD Cooling Fan Failure 101
- Pitot Static System 102
- Flight Control System 104
- Landing Gear System 105
- Other Conditions 106
- Communications Failure 107
- Intentionally Left Blank 108
- Section 4 109
- Normal Procedures 109
- Introduction 111
- SR22_FM04_1454 112
- Cirrus Design Section 4 113
- SR20 Normal Procedures 113
- P/N 11934-004 4-5 113
- Revision 1 113
- 4-6 P/N 11934-004 114
- Section 4 Cirrus Design 114
- Normal Procedures SR20 114
- Original Issue 114
- P/N 11934-004 4-7 115
- 4-8 P/N 11934-004 116
- Before Starting Engine 117
- Starting Engine 118
- P/N 11934-004 4-11 119
- Before Taxiing 120
- Before Takeoff 121
- 4-14 P/N 11934-004 122
- P/N 11934-004 4-15 123
- Normal Takeoff 124
- Short Field Takeoff 124
- P/N 11934-004 4-17 125
- 4-18 P/N 11934-004 126
- Cruise Leaning 127
- Before Landing 128
- P/N 11934-004 4-21 129
- Balked Landing/Go-Around 130
- After Landing 130
- Shutdown 131
- Environmental Considerations 132
- P/N 11934-004 4-25 133
- Fuel Conservation 134
- Section 5 135
- Performance Data 135
- Temperature Conversion 142
- Stall Speeds 144
- Wind Components 145
- Takeoff Distance 146
- Takeoff Distance - 3050 LB 147
- Takeoff Distance - 2500 LB 148
- Takeoff Climb Gradient 149
- Takeoff Rate of Climb 150
- Enroute Climb Gradient 151
- Enroute Rate of Climb 152
- Cruise Performance 155
- Range / Endurance Profile 157
- Balked Landing Climb Gradient 159
- Balked Landing Rate of Climb 160
- Landing Distance 161
- Section 6 163
- Weight and Balance Data 163
- Airplane Weighing Form 166
- Airplane Weighing Procedures 167
- 6-6 P/N 11934-004 168
- Section 6 Cirrus Design 168
- Weight and Balance Data SR20 168
- SR22_FM06_1440A 169
- Loading Instructions 170
- Loading Data 172
- Moment Limits 173
- Weight & Balance Record 174
- Equipment List 175
- Section 7 177
- 7-2 P/N 11934-004 178
- Section 7 Cirrus Design 178
- Airframe 180
- Empennage 181
- Flight Controls 182
- Figure 7-1 183
- Elevator System 183
- Aileron System 184
- Figure 7-2 185
- Rudder System 186
- Control Locks 186
- Figure 7-3 187
- Instrument Panel 188
- SR20_FM07_3010 189
- Flight Instruments 190
- SR20_FM07_3009 191
- Attitude Indicator 192
- Airspeed Indicator 193
- Altimeter 194
- Vertical Speed Indicator 195
- Magnetic Compass 195
- Wing Flaps 196
- Figure 7-6 197
- Landing Gear 198
- Cirrus Design Section 7 199
- P/N 11934-004 7-25 199
- Baggage Compartment 200
- P/N 11934-004 7-27 201
- 7-28 P/N 11934-004 202
- Cabin Doors 203
- Engine Controls 204
- P/N 11934-004 7-31 205
- Engine Indicating 206
- Density Alt 8000 Ft 207
- 7-34 P/N 11934-004 208
- P/N 11934-004 7-35 209
- Engine Lubrication System 210
- Ignition and Starter System 210
- Air Induction System 210
- Engine Exhaust 211
- Engine Fuel Injection 211
- Engine Cooling 211
- Propeller 212
- Fuel System 213
- Fuel Selector Valve 214
- Fuel Pump Operation 214
- Figure 7-8 215
- Fuel System Schematic 215
- Fuel Indicating 216
- 7-44 P/N 11934-004 218
- P/N 11934-004 7-45 219
- Electrical System 220
- Figure 7-10 221
- Electrical System Schematic 221
- Power Distribution 222
- Electrical System Protection 223
- 7-50 P/N 11934-004 224
- Electrical System Control 225
- Ground Service Receptacle 226
- Electrical Indicating 227
- Lighting Systems 229
- Interior Lighting 230
- Environmental System 231
- Figure 7-12 232
- Distribution 233
- 7-60 P/N 11934-004 234
- Stall Warning System 235
- Pitot-Static System 236
- Figure 7-13 237
- Avionics 238
- Figure 7-14 239
- 7-66 P/N 11934-004 240
- P/N 11934-004 7-67 241
- SR20_FM07_2807 242
- SR20_FM07_2820 243
- 7-70 P/N 11934-004 244
- P/N 11934-004 7-71 245
- Optional Avionics 246
- P/N 11934-004 7-73 247
- 7-74 P/N 11934-004 248
- P/N 11934-004 7-75 249
- SR20_FM07_3011 250
- Avionics Support Equipment 251
- 7-78 P/N 11934-004 252
- Cabin Features 253
- Fire Extinguisher 254
- Hour Meters 255
- Emergency Egress Hammer 255
- Convenience Outlet 255
- System Description 256
- Activation Handle 257
- 7-84 P/N 11934-004 258
- Deployment Characteristics 259
- Section 8 261
- Operator’s Publications 263
- Ordering Publications 264
- Airworthiness Directives 266
- Airplane Inspection Periods 266
- 100-Hour Inspection 267
- 8-8 P/N 11934-004 268
- Section 8 Cirrus Design 268
- Cirrus Design Section 8 269
- P/N 11934-004 8-9 269
- Ground Handling 270
- P/N 11934-004 8-11 271
- 8-12 P/N 11934-004 272
- P/N 11934-004 8-13 273
- Leveling 274
- P/N 11934-004 8-15 275
- Servicing 276
- P/N 11934-004 8-17 277
- Tire Inflation 278
- Propeller Servicing 278
- Oil Servicing 278
- Figure 8-1 280
- Approved Oils 280
- Fuel System Servicing 281
- 8-22 P/N 11934-004 282
- Draining Fuel System 283
- Battery Service 284
- Cleaning and Care 285
- Figure 8-2 286
- P/N 11934-004 8-27 287
- 8-28 P/N 11934-004 288
- Cleaning Interior Surfaces 289
- Figure 8-3 290
- P/N 11934-004 8-31 291
- 8-32 P/N 11934-004 292
- Section 9 293
- Log of Supplements 295
- P/N 11934-S36 1 of 8 297
- Cirrus Design Section 9 297
- SR20 Supplements 297
- Revision 01: 12-18-08 297
- Section 1 - General 298
- Section 2 - Limitations 299
- Section 4 - Normal Procedures 300
- Section 5 - Performance 300
- P/N 11934-S36 5 of 8 301
- Inspection / Test 302
- P/N 11934-S36 7 of 8 303
- Control System 305
- Autopilot Malfunction 307
- Autopilot Miscompare 308
- P/N 11934-S41 7 of 16 311
- Revision 01: 08-26-09 311
- Figure - 1 312
- GFC 705 AFCS Mode Controller 313
- Altitude Hold (ALT) 10 Feet 314
- P/N 11934-S41 11 of 16 315
- SR20_FM09_2920 316
- Roll and Pitch Servo 317
- Integrated Avionics Units 317
- Autopilot Disconnect Switch 318
- Take Off / Go Around Button 318
- Pitch Trim Adapter 318
- Annunciation System 319
- No Change 320
- P/N 11934-S42 1 of 6 321
- Original Issue: 12-18-08 321
- Response To TAWS Warnings 323
- Response To TAWS Cautions 323
- System Constraints 325
- Section 10 327
- Safety Information 327
- Deployment Scenarios 330
- Cirrus Design Section 10 331
- SR20 Safety Information 331
- P/N 11934-004 10-5 331
- Landing Considerations 333
- P/N 11934-004 10-9 335
- Operating Practices 336
- Brake Maintenance 337
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