Boeing 737 - TRANSFER BUS OFF

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737 Flight Crew Operations Manual

6.16

D6-27370-4Q8-SJA

6.16

TRANSFER BUS OFF

1 BUS TRANSFER switch . . . . . . . . OFF, then AUTO

■ ■ ■ ■

TRANSFER

BUS OFF

TRANSFER BUS OFF

Condition:

The transfer bus is not energized.

December 15, 2017

Main Page

Quick Action Index1
Lights Index3
Unannunciated Index9
Alphabetical Index11
Normal Checklists23
- PREFLIGHT23
- BEFORE START23
- BEFORE TAXI24
- BEFORE TAKEOFF24
- AFTER TAKEOFF24
- DESCENT25
- APPROACH25
- LANDING25
- SHUTDOWN25
- SECURE26
NNC.0-Miscellaneous27
- Table Of Contents27
- Emergency Descent29
- Ditching31
NNC.1-Airplane Gen., Emer. Equip., Doors, Windows37
- Table Of Contents37
- AIRSTAIR39
- AUTOMATIC UNLOCK43
- CARGO DOOR44
- ELT48
- EMERGENCY EXIT LIGHTS NOT ARMED49
- ENTRY DOOR50
- EQUIPMENT DOOR52
- LOCK FAIL56
- PASSENGER OXYGEN ON56
- SERVICE DOOR57
- Window Damage - Forward (L1, L2, R1, R2)58
- Window Damage - Unheated Side (L3, R3)62
- Window Damage - Upper (L4, L5, R4, R5)67
- Window Open72
NNC.2-Air Systems73
- Table Of Contents73
- CABIN ALTITUDE WARNING or Rapid Depressurization75
- AUTO FAIL or Unscheduled Pressurization Change78
- BLEED TRIP OFF82
- Cabin Temperature Hot84
- DUAL BLEED88
- DUCT OVERHEAT89
- EQUIPMENT COOLING OFF89
- OFF SCHEDULE DESCENT90
- PACK TRIP OFF91
- WING-BODY OVERHEAT (-300/-500)94
NNC.3-Anti-Ice, Rain99
- Table Of Contents99
- ENGINE COWL ANTI-ICE101
- ENGINE COWL VALVE OPEN102
- Ice Crystal Icing104
- PITOT STATIC HEAT107
- WINDOW OVERHEAT108
- WING ANTI-ICE VALVE OPEN110
NNC.4-Automatic Flight113
- Table Of Contents113
- AUTOPILOT DISENGAGE115
- AUTOTHROTTLE DISENGAGE115
NNC.5-Communications117
- Table Of Contents117
- ACARS Electrical Power Loss119
- ACARS Fail119
- Radio Transmit Continuous (Stuck Microphone Switch)120
NNC.6-Electrical121
- Table Of Contents121
- BUS OFF123
- GENERATOR DRIVE HIGH OIL TEMPERATURE127
- GENERATOR DRIVE LOW OIL PRESSURE128
- LOSS OF BOTH ENGINE DRIVEN GENERATORS130
- STANDBY POWER OFF137
- TRANSFER BUS OFF138
NNC.7-Engines, APU139
- Table Of Contents139
- Aborted Engine Start141
- Engine Limit or Surge or Stall142
- Loss Of Thrust On Both Engines146
- APU FAULT152
- APU LOW OIL PRESSURE152
- APU OVERSPEED153
- Engine Failure or Shutdown154
- Engine High Oil Temperature157
- Engine High Vibration160
- Engine In-Flight Start162
- ENGINE LOW OIL PRESSURE166
- ENGINE OIL FILTER BYPASS168
- LOW IDLE169
- One Engine Inoperative Landing170
- PMC INOPERATIVE173
- REVERSER173
- REVERSER UNLOCKED (IN FLIGHT)174
- START VALVE OPEN176
- Volcanic Ash178
NNC.8-Fire Protection181
- Table Of Contents181
- APU FIRE183
- ENGINE FIRE or Engine Severe Damage or Separation184
- ENGINE OVERHEAT188
- Engine Tailpipe Fire190
- Smoke, Fire or Fumes192
- APU DETECTION INOPERATIVE196
- CARGO FIRE197
- CARGO FIRE DETECTOR FAULT200
- ENGINE FIRE/OVERHEAT DETECTOR FAULT200
- Smoke or Fumes Removal202
- WHEEL WELL FIRE206
NNC.9-Flight Controls207
- Table Of Contents207
- Runaway Stabilizer209
- Uncommanded Roll212
- All Flaps Up Landing214
- AUTO SLAT FAIL216
- Elevator Tab Vibration216
- FEEL DIFFERENTIAL PRESSURE217
- FLAP LOAD RELIEF217
- FLIGHT CONTROL LOW PRESSURE218
- Jammed or Restricted Flight Controls219
- LEADING EDGE FLAPS TRANSIT222
- MACH TRIM FAIL226
- SPEED BRAKE226
- SPEED BRAKE DO NOT ARM227
- SPEED BRAKE DO NOT ARM228
- SPEED TRIM FAIL230
- STABILIZER OUT OF TRIM232
- Stabilizer Trim Inoperative234
- STANDBY RUDDER ON237
- Trailing Edge Flap Asymmetry238
- Trailing Edge Flap Disagree242
- Trailing Edge Flaps Up Landing248
- YAW DAMPER252
NNC.10-Flight Instruments, Displays253
- Table Of Contents253
- Airspeed Unreliable255
- FLIGHT RECORDER OFF260
- SG FAIL260
NNC.11-Flight Management, Navigation261
- Table Of Contents261
- FMC DISAGREE263
- FMC DISAGREE - VERTICAL264
- FMC FAIL265
- FMC FAIL266
- FMC/CDU ALERTING MESSAGE268
- GPS269
- INSTRUMENT SWITCH269
- IRS DC FAIL270
- IRS FAULT271
- IRS ON DC273
- UNABLE REQD NAV PERF - RNP274
- UNABLE REQD NAV PERF - RNP275
NNC.12-Fuel277
- Table Of Contents277
- CROSSFEED SELECTOR INOPERATIVE279
- FUEL FILTER BYPASS280
- Fuel Leak Engine282
- FUEL PUMP LOW PRESSURE288
- Fuel Quantity Indication Inoperative290
- Fuel Quantity Indication Inoperative292
- Fuel Temperature Low293
- Inadvertent Transfer of Fuel into Center Tank294
- Minimum Fuel Operation296
NNC.13-Hydraulics299
- Table Of Contents299
- HYDRAULIC PUMP LOW PRESSURE301
- HYDRAULIC PUMP OVERHEAT302
- LOSS OF SYSTEM A303
- LOSS OF SYSTEM B306
- MANUAL REVERSION or LOSS OF SYSTEM A AND SYSTEM B310
- STANDBY HYDRAULIC LOW PRESSURE316
- STANDBY HYDRAULIC LOW QUANTITY316
NNC.14-Landing Gear317
- Table Of Contents317
- ANTISKID INOPERATIVE319
- AUTO BRAKE DISARM321
- Brake Pressure Indicator Zero PSI323
- GEAR DISAGREE324
- Landing Gear Lever Jammed in the Up Position328
- Landing Gear Lever Will Not Move Up After Takeoff336
- Manual Gear Extension340
- Partial or All Gear Up Landing350
NNC.15-Warning Systems355
- Table Of Contents355
- LANDING CONFIGURATION357
- TAKEOFF CONFIGURATION357
- WARNING HORN (INTERMITTENT) or WARNING LIGHT - CABIN ALTITUDE OR TAKEOFF CONFIGURATION358
- ALTITUDE ALERT359
- GROUND PROXIMITY INOPERATIVE359
- Overspeed360
- Tail Strike360
Operational Information361
- Table Of Contents361
- Ops Info363
  - Introduction363
Performance Inflight - QRH365
- Section Table of Contents365
- Section 737-300 CFM56-3_20K KG CAA367
- Section 737-300 CFM56-3_20K KG FT FAA421
- Section 737-300 CFM56-3_22K KG CAA477
- Section 737-300 CFM56-3_22K KG FAA531
- Section 737-300 CFM56-3_22K LB FAA587
- Section 737-500W CFM56-3_20K LB FAA643
Maneuvers699
- Table Of Contents699
- Introduction701
- Non-Normal Maneuvers703
- Flight Patterns715
Checklist Instructions723
- Table Of Contents723
- Model Identification725
- Revision Record727
- Revision Highlights729
- QRH List of Effective Pages731
- Normal Checklists741
- Non-Normal Checklists743
Evacuation751
- Evacuation752

Boeing 737 - TRANSFER BUS OFF

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