B777 Question: At what quantity in an individual...

[Kapitanleutnant]

main fuel tank will the EICAS message: Fuel Qty Low appear?

I had heard it was 4.2 tons total or the first main tank to reach 2.1 tons would trigger the EICAS message.

I'm looking for a reference for it

Thanks if anyone can help

Kap

[cod liver oil]

Courtesy B777 FIM ...

The EICAS message FUEL QTY LOW will show when there is less than 4500 LB (2000 KG) of fuel the left or right main fuel tank.

NOTE: The EICAS message will go off when the fuel quantity in each main fuel tank is increased to 4700 LB (2200 KG)

Hope this helps

rgds

cod

[Kapitanleutnant]

Cod...

Thanks. What is the "FIM"? Flight information Manual? That's what I'm looking for is the reference.

About a year ago my airline got rid of the Boeing Airplane Manual altogether in the aircraft and that reference to the numbers it activates the EICAS is nowhere to be found in the FCOM at all.

Thanks again

Kap

[cod liver oil]

Fault Isolation Manual

Refer task 28-22-00-810-846.

[Kapitanleutnant]

Thanks Cod...

Sounds like it's more of a maintenance reference than one pilots would use?

Thanks for the reference.

K

[MATMAX]

oh my god ! this guy should be a pilot flying in the uae and who is trying to follow some stupid stuff said by his management ...
if you get this message , dude , that means that you have a LOW FUEL QUANTITY , thats it !!!
try to glide with a T7 ...
Cod , are you a beginner ? this kind of message has nothing to deal with the FIM !
It is not a fault but nothing else than an operationnal message !
i can not believe it ...

[Alber Ratman]

Totally in agreement MATMAX.. :E

"Deal" should be "Do" mind..

[MATMAX]

ok , sorry Ratman , i appreciate your correction even if it is changing nothing in what i am suggesting ... english language from Toulouse ...maybe !
few weeks ago , i had to DEAL with drivers who were writing this kind of stuff in the Tech Logs , can you believe it :ugh:!!!
guess my answer to these snags ...

[cedgz]

not a fault but covered in the fim

846. FUEL QTY LOW - EICAS Message
A. Initial Evaluation
(1) This task is for this EICAS message:
(a) FUEL QTY LOW
(2) The EICAS message FUEL QTY LOW will show when there is less than 4500 LB (2000 KG) of fuel
the left or right main fuel tank.
NOTE: The EICAS message will go off when the fuel quantity in each main fuel tank is
increased to 4700 LB (2200 KG)
(a) No maintenance action is necessary.
------------------------- END OF TASK ---------------------------

just a perfect reference to sign off drivers crap

so COD, thanks for the values,
MATMAX, our 777 drivers are smarter than yours

[cod liver oil]

Take it easy Max, I’ve merely provided a simple reply to a pretty straightforward question (complete with source document).

I feel that your condescending remarks are out of line and uncalled for, but don’t worry my friend, I am not offended. I can see from viewing a small sample of your previous posts that you like to provoke. Whatever “dude”, that’s your nature.

Anyway, it’s the weekend Max, may I suggest that you open yourself up a bottle of fine French red. Relax, enjoy a glass or two, and don’t worry if it tastes like piss, you can always pour it on that flamethrower of yours.

:ok:
cod

[SeldomFixit]

sadly. Mat is the ideal man for a 1 man station but they haven't been able to find anyone that would put up with him :ugh:

[MATMAX]

Ced,
I agree , your drivers should be French speakers , that will explain it ...

Cod,
You made me laugh...
Why are you talking about alcohol , a problem with it ?
Do you have a FUEL QTY LOW ...?
Everybody knows that cod liver oil has a better taste than French wine ...
A more personal question : on your car , are you waiting to have the fuel reserve light on to refuel it ?
Go on reading the AMM , thats a good start ...

SeldomFixit,
I am still in touch with most of the guys i have worked with , one just called me yesterday and we stayed two hours on the phone...
Now , please tell me , what is the link with a FUEL QTY LOW msg on the B777 ...?

[TURIN]

Mods can we please get MATMAX banned?

He gives good, honest, decent engineers a bad name.

[MATMAX]

TURIN,
Me too , i love you !

[EK Profesional]

hee hee you funny man matmax. don't mind there taunts. I think we both cut from the same cloth.

I remember we have this fault last year. we try numerous resets but problem would not go away, finaly went into tank and changed densitometer, refueled to do leak check and test, and voila problem went away.

So like matmax says, always good to start with AMM

[MATMAX]

Tank yu EK Profesional.
But my friend , it is not because a pilot raised a snag that you have to reset something or try to fix something ... maybe there is no fault , simply !
I think thats a problem with many Engineers nowadays ...
You get a FUEL QTY LOW msg , first thing to look at , is the quantity of the remaining fuel in the tanks (common sense !!!) ... then the Manufacturer , is this case , to help you , created something called the MAT : Maintenance Access Terminal , use it !
Check the IFDE , PRESENT LEG FAULT , etc ... until you find something in the right ATA and then if it is necessary ... the FIM , you know , the Flight Information Manual :}
Anyway , all i just said is the basic way of working ... normally !

[TURIN]

EKPro

Last Activity: 21st Nov 2011 12:45
Join Date: 21st Nov 2011


MATMAX
Do you really have to invent a friend to back you up? :suspect:

[cedgz]

@ MATMAX, no our drivers are not french speaking, they speak the language of shakespeare but from the other side of the pond
and also the french wine wasn't bad with you(except some hang overs) so please, respect it
and also common sense, something that isn't easy to find in many individuals, but with a complete insane logbook entry just as quantity fuel low, they ask us to sign it off with an amm or fim ref instead of just responding that this :mad: pilot was too :mad: to see that he was too low on fuel qty and that this is a normal eicas message:confused:

[MATMAX]

TURIN,
Are you making sometimes a thread , moving forward ...?
Anyway , your imagination is very fertile or is it because you are back in dxb and feel frustrated ...?

Ced,
The pilots asked you to reply with an AMM reference ???!!!
Are you telling them how to do their job !!!???

[cedgz]

no, that fuel low stuff was not mine, never had this one
for every snag we have to make a mm, fim or so response(except lav svc etc...)
am i telling how to do their job! no!!! did i told em once how to use their magic buttons and how all this monkey motion works! yes!!!!

[MATMAX]

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]

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]

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]

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]

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]

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]

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]

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.