The Shutdown Severity Levels (SSL) of each FCN, are defined as
follows:
1 = Enter SHUTDOWN state and transmit diagnostic messages.
2 = Enter SHUTDOWN state (unless operating in flight and TSO mode)
and transmit diagnostic messages.
3 = Enter SHUTDOWN state if redundant source not available, unless
operating in flight and in TSO mode. Transmit diagnostic messages.
4 = Continue with operation, transmit diagnostic messages.
X = Not applicable.
The following Table 1 is a list of all Fault Code Numbers (FCN) with
their associated:;
-Fault Symptoms;
-LRU IDs (MCDU Message);
-Fault Class ;
-Shutdown Messages;
-Severity Levels.
Table 2 is a list of all LRU Ids with their associated MCDU Message.
Table 1
C = POWER-UP
D = WATCH
E = START PREPARATION
F = STARTING
G = RUN
H = COOLDOWN
I = SHUTDOWN
J = SELF TEST
For LRU ID definition refer to Table 2
-------------------------------------------------------------------------------FCN | FAULT SYMPTOM | LRU ID |FAULT| MESSAGE | SSL
| | |CLASS| | C D E F G H I J -----+---------------------+--------+-----+-------------------+----------------0 | LCD STATIC PRESS. | 13 | 1 | ---| 4 4 4 4 4 4 4 4
| SENSOR FAIL LOW | | | | -----+---------------------+--------+-----+-------------------+----------------1 | LCD STATIC PRESS. | 13 | 1 | ---| 4 4 4 4 4 4 4 4 | SENSOR FAIL HIGH | | | |
-----+---------------------+--------+-----+-------------------+----------------2 | LOW PMG VOLTAGE | 53 | 1 | ---| X X X 4 4 4 4 X -----+---------------------+--------+-----+-------------------+----------------3 | LCD DELTA P SENSOR | 13 | 1 | ---| 4 4 4 4 4 4 4 4
| FAIL HIGH | | | | -----+---------------------+--------+-----+-------------------+----------------4 | INLET PRESS. SENSOR | 29 | 1 | ---| 4 4 4 4 4 4 4 4 | LOW | | | | -----+---------------------+--------+-----+-------------------+----------------5 | INLET PRESS. SENSOR | 29 | 1 | ---| 4 4 4 4 4 4 4 4 | HIGH | | | | -----+---------------------+--------+-----+-------------------+----------------6 | INLET PRESS. SENSOR | 29 | 1 | ---| 4 4 4 4 4 4 4 4 | RATE | | | | -----+---------------------+--------+-----+-------------------+----------------7 | N O T U S E D | -| | ---| -----+---------------------+--------+-----+-------------------+----------------8 | INLET TEMPERATURE | 29 | 1 | ---| 4 4 4 4 4 4 4 4 | RTD OPEN | | | | -----+---------------------+--------+-----+-------------------+----------------9 | INLET TEMPERATURE | 29 | 1 | ---| 4 4 4 4 4 4 4 4 | RTD SHORTED | | | | -----+---------------------+--------+-----+-------------------+----------------10 | GEN. OIL TEMP. | 25 | 3 | ---| 3 3 3 3 3 3 3 3 | SENSOR OPEN | | | |
-------------------------------------------------------------------------------
FCN | FAULT SYMPTOM | LRU ID |FAULT| MESSAGE | SSL
| | |CLASS| | C D E F G H I J -----+---------------------+--------+-----+-------------------+---------------------+---------------------+--------+-----+-------------------+----------------
11 | GEN. OIL TEMP. | 25 | 3 | ---| 3 3 3 3 3 3 3 3 | SENSOR SHORTED | | | | -----+---------------------+--------+-----+-------------------+----------------12 | GBX TEMP SENSOR | 38 | 3 | ---| 3 3 3 3 3 3 3 3 | OPEN | | | | -----+---------------------+--------+-----+-------------------+----------------13 | GBX TEMP SENSOR | 38 | 3 | ---| 3 3 3 3 3 3 3 3 | SHORTED | | | | -----+---------------------+--------+-----+-------------------+----------------14 | COLD JUNCTION RTD | 14 | 3 | ---| 4 4 4 4 4 4 4 4 | OPEN | | | | -----+---------------------+--------+-----+-------------------+----------------15 | COLD JUNCTION RTD | 14 | 3 | ---| 4 4 4 4 4 4 4 4 | SHORTED | | | | -----+---------------------+--------+-----+-------------------+----------------16 | GBX DE-OILING VALVE | 12 | 3 | ---| 4 4 4 4 4 4 4 4 | SHORTED | | | | -----+---------------------+--------+-----+-------------------+----------------
17 | MAIN START | 59 | 1 | ---| X X X 4 X X X X | CONTACTOR OUTPUT | | | | | SHORT CIRCUIT | | | |
-----+---------------------+--------+-----+-------------------+----------------
18 | B/U START CONTACTOR | 10 | 1 | ---| X X X 4 X X X X | OUTPUT SHORT | | | | | CIRCUIT | | | |
-----+---------------------+--------+-----+-------------------+----------------19 | START IN PROGRESS | 45 | 3 | ---| X X X 4 X X X X | OUTPUT SHORTED | | | | -----+---------------------+--------+-----+-------------------+----------------20 | APU AVAILABLE OUTPUT| 3 | 3 | ---| X X X X 4 4 X X | SHORTED | | | | -----+---------------------+--------+-----+-------------------+----------------21 | MAIN FUEL VALVE | 21 | 1 | ---| 4 X 4 4 4 4 X4 | SHORTED | | | | -----+---------------------+--------+-----+-------------------+----------------22 | BLEED VALVE OPEN | 6 | 2 | ---| X X X X 4 X X X | OUTPUT SHORTED | | | |
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