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-   -   B777 Question: At what quantity in an individual... (https://www.pprune.org/engineers-technicians/469425-b777-question-what-quantity-individual.html)

MATMAX 22nd November 2011 09:02

Ced,
I agree and i understand...
Writing down a ref is just to show that you have used some approved documents ... thats some "quality" stuff and that you have not "found it in a corn flakes box" ...
Unfortunately , everything is not in the docs ... remember it and thats the reason why sometimes , we should use our knowledge , experience and common sense ... i would say , thats when our job is really interesting.
For the second part , i was meaning that if everybody was taking care of his own job , relations between people would have been better , maybe.

cedgz 22nd November 2011 10:02

MATMAX,
I totally agree with you on that one
Fixing airplanes is the driver of our motivation, changing boxes, bulbs, tyres,etc has to be done, but it's routine
With using your knowledge you can skip easely some steps in the fim.
fim is good, it can put you on the right way to look when your lost, but i encourage everybody to try to understand the system he works on instead of just stupidly following the boxes. At the end that is what make de difference between a good and bad mech/tech/engineer

six7heavy 24th November 2011 18:52

fuel qty low
 
My friend, the information COD provided is correct..
That particular fuel remaining qty thet triggers the eicas message does not appear neither in the FCOM, FCTM nor the AFM. Only in the FIM.
How the pilot will deal with the message is another story..

MATMAX 24th November 2011 22:53

Six7heavy,
Nobody said that COD was incorrect.
If there is nothing in pilots books , maybe it is because it should not happen "normally" , nope ?
I guess that the manufacturer created this eicas message to tell the pilots :"hey guys , nearly no more fuel !".
It exists in the FIM only because , maybe , in the case of a real quantity indication defect , but i have never heard about it on the 777 ...
As per my own experience , fuel quantity indications faults are usually created by water (that can be seen on the maintenance pages and i would say that it is accurate on the -300 mostly).
Please read again :" no maintenance action is necessary " , it says all.
Common sense !

6 degrees of motion 25th November 2011 15:11

Hope this clears it up.

FUEL QTY LOW Caution Msg Number: C28001 Rev: 0 Basic
ATA: 28 - 41 Fault Code: 284 001 00 Database Version: 000 - 999
Master Caution Light: Yes Chime: No Aural Tone: Yes Latch: Neither AIR nor GROUND
EICAS Inhibits: ESI: Yes Autoland: Yes Comm Msg: Yes
Configurations: PW_GE_RR.I
Inhibits:
Snapshot:
EICAS Logic: FUEL_QTY_LOW_C.1
Condition: Fuel quantity is less than 4500 pounds/2041 kilograms in either L or R main tank.
Msg Description: The fuel quantity processor unit (FQPU) will provide a signal on the left and right system buses if a low fuel condition
exists in either of the main tanks. The FQPU will set the message signal when the fuel quantity of either main tank
decreases below 4500 pounds (or kilogram equivalent) for a period greater than 30 seconds. The message signal
will remain set until the fuel quantity increases above 4700 pounds (2133 kilograms) for a period greater than 15
seconds. EICAS logic is to display message when message signal is set.

MATMAX 26th November 2011 12:12

Ok 6 , you have quoted some documents.
Now , what is your own conclusion if this msg was written in a tech log that you have to manage ?

cedgz 28th November 2011 23:27

just an alert to let drivers and spanner operaters know, that fuel is too low to get the hydraulic fluid cooled down and that they should monitor hyd temp

amar69 17th October 2012 12:35

Fuel QTY LOW EICAS on B77W
 
Do tou have any document or manual,or Boeing support for that figure,I hear about 2.1 tons on each main tank but I couldn't found it. Thank you.


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