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Text for CFDS Indication | ATA | BITE Detection (Failed LRUs) ============================+==========+======================================= ----------------------------+----------+---------------------------------------
K. BITE Detection
(1) CLASS 2 and CLASS 3 Faults
(a) CLASS 2 Faults
Table 3
-------------------------------------------------------------------------------Text for CFDS Indication | ATA | BITE Detection (Failed LRUs) ============================+==========+======================================= POWER SUPPLY INTERRUPT | 24-00-00 | Power Supply Interrupt ----------------------------+----------+---------------------------------------FIRE EMER STOP RLY (6WF) | 26-22-00 | Low Fuel Pressure Relay shows | | open circuit/circuit failure
----------------------------+----------+---------------------------------------LOW FUEL PRESSURE | 28-20-00 | Fuel Pressure shows low during APU CHECK APU FUEL SUPPLY | | run
----------------------------+----------+---------------------------------------AIR INTAKE FLAP ACTUATOR | 49-16-51 | Inlet Flap shows Flap close circuit (4015KM) | | open/short
| | Inlet Flap shows Flap open circuit | | open/short | | Inlet Flap shows Flap close high | | current | | Inlet Flap shows Flap failed to fully | | close
----------------------------+----------+---------------------------------------IGV ACTUATOR (8014KM) | 49-23-51 | IGV LVDT pri/sec shows open circuit
----------------------------+----------+---------------------------------------IGV ACTUATOR (8014KM)/ | 49-23-51 | IGV LVDT excitation shows failure ECB (59KD) | |
----------------------------+----------+---------------------------------------INLET PRESS XDCR (8048KM) | 49-51-21 | P2 XDCR out-of-range low/high | | P2 XDCR shows < 8psia on GND
----------------------------+----------+---------------------------------------LOAD CONTROL VALVE | 49-51-51 | LCV shows not open (8050KM) | | LCV shows open/closed switch failure
----------------------------+----------+---------------------------------------INLET PRESS XDCR (8048KM) | 49-51-21 | P2 XDCR out-of-range | | P2 XDCR shows < 8psia on GND ----------------------------+----------+---------------------------------------WRG: APU AVAILABLE | 49-61-00 | APU available shows circuit failure
----------------------------+----------+---------------------------------------WRG: APU FAULT RELAY | 49-61-00 | APU fault relay shows circuit failure ----------------------------+----------+---------------------------------------WRG: LOAD VALVE OPEN SIGNAL| 49-61-00 | LCV open signal shows circuit failure ----------------------------+----------+---------------------------------------
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Text for CFDS Indication | ATA | BITE Detection (Failed LRUs) ============================+==========+======================================= WRG: START IN PROGRESS | 49-61-00 | APU start in progress shows circuit | | failure ----------------------------+----------+---------------------------------------ECB (59KD) | 49-61-34 | ECB internal failure
----------------------------+----------+---------------------------------------OIL SUMP TEMP SENSOR | 49-91-51 | Oil sump temp sensor shows (8084KM) | | out of range low/high
----------------------------+----------+---------------------------------------OIL LEVEL SWITCH (8087KM) | 49-93-00 | Oil quantity switches disagree ----------------------------+----------+---------------------------------------LOW OIL LEVEL | 49-93-00 | Oil level shows low ----------------------------+----------+---------------------------------------OIL TEMP SWITCH (8090KM) | 49-94-13 | Oil Temp Switch shows open circuit ----------------------------+----------+---------------------------------------LOW OIL PRESS SW (8091KM) | 49-94-14 | LOP Switch shows electrical gnd ----------------------------+----------+---------------------------------------APU OIL HEATER (8093KM) | 49-96-51 | Oil Heater Failure ----------------------------+----------+---------------------------------------
(b) CLASS 3 Faults
Table 4
-------------------------------------------------------------------------------Text for CFDS Indication | ATA | BITE Detection (Failed LRUs) ============================+==========+======================================= NO DEMAND DATA FROM ECS | 21-63-34 | ECS Zone Controller | | ECS Demand failure ----------------------------+----------+---------------------------------------NO PACK DATA FROM ECS | 21-63-34 | ECS Zone Controller | | ECS Data failure
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