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screen.
Line 5 gives the maintenance message number. You use this
number to find the correct fault isolation procedures to correct
the fault.
Lines 6, 7, and 8 give a short description of the fault.
Lines 9 through 11 show the last three flight legs and which leg
or legs has the fault. The X under the flight leg number shows
the fault on this page occurred during that leg. Flight leg 0 is the
most recent engine ground run. The EEC puts faults from
ground runs in flight leg 1 when the airplane goes to air mode.
The AIR/GROUND system sends an air/ground signal to the
DEUs. The DEUs then send this signal to the EECs. The EECs
use the air/ground signal and air speed to increment the leg
count when the airplane goes to air mode.
If there are no faults for the last three flight legs and the last
ground run, the CDU shows the NO RECENT FAULTS message.
You select HISTORY to see the last 10 flight legs.
ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE RECENT FAULTS
EFFECTIVITY
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ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE RECENT FAULTS
ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE RECENT FAULTS
EFFECTIVITY
GUN ALL 73-21-00
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73-21-00-203
General
The FAULT HISTORY function gives you the faults stored in EEC
non-volatile memory (NVM) for the last 10 flight legs. The EEC
stores up to 10 faults in each dispatch level. If there are 10 faults
stored in EEC memory for a given dispatch level during the last
10 flight legs and a new fault occurs with the same dispatch
level, the EEC erases the oldest fault to make space for the new
fault. One fault shows on each page. The EEC erases all faults
that are older than 10 flight legs. A new leg begins when the
EEC detects transition from ground to air.
If fault data is not available from both EEC channels, you see a
message that tells you which EEC channel the CDU cannot use.
You select CONTINUE to see the data for the channel the CDU
can use.
The dispatch level shows on line 3 of the FAULT HISTORY
screen.
Line 5 gives the maintenance message number. You use this
number to find the correct fault isolation procedures to correct
the fault.
Lines 6, 7, and 8 give a short description of the fault.
Lines 9 through 11 shows the last 10 flight legs and which leg or
legs has the fault. The X under the flight leg number shows the
fault on this page occurred during that leg. Flight leg 0 is the
most recent ground run. The EEC stores faults from this ground
run in flight leg 1 when the airplane goes in-flight.
If there are no faults for the last 10 flight legs and the last ground
run, the CDU shows the NO FAULT HISTORY STORED
message.
ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE FAULT HISTORY
EFFECTIVITY
GUN ALL 73-21-00
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
73-21-00-205
ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE FAULT HISTORY
ENGINE FUEL AND CONTROL - ENGINE CONTROL - TRAINING INFORMATION POINT - EEC BITE FAULT HISTORY
EFFECTIVITY
GUN ALL 73-21-00
Page 91
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
73-21-00-205
General
The IDENT/CONFIG pages show engine and EEC configuration
and identification data. There are two pages of this data.
IDENT/CONFIG Page 1
The IDENT/CONFIG page 1 gives this data:
* AIRPLANE MODEL (737-600/700/800)
* ENGINE MODEL (7Byy where yy X 1000 is the base thrust
rating)
* BUMP (hot day thrust cutback point increase)
* N1 TRIM (N1 trim setting)
* EEC P/N (EEC part number)
* EEC S/W VER (EEC software version)
* START MODE (engine start mode)
* ENG S/N (engine serial number).
You select ENG S/N to change the engine serial number. When
you select ENG S/N, a new screen shows and instructs you to
enter the six-digit engine serial number. After you enter the new
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