B744 Engine Fail EICAS
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B744 Engine Fail EICAS
Good day everyone,
Just a quick question regarding the 744.
What parameters trigger the ENG 1,2,3,4 FAIL message to show up?
I am assuming the EEC's compare the EPR, N1, N2 and others and then determine that one engine is toast when they drop beyond a certain point.
Any idea what these figures are?
Thanks for your input!
OneTwoTree
Just a quick question regarding the 744.
What parameters trigger the ENG 1,2,3,4 FAIL message to show up?
I am assuming the EEC's compare the EPR, N1, N2 and others and then determine that one engine is toast when they drop beyond a certain point.
Any idea what these figures are?
Thanks for your input!
OneTwoTree
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Standing by to be corrected, but this is what my FCOM 2 (General Electric CF6-80) says... Might be different for different engines.
It does not directly give the exact trigger parameters as such, but a bit of reading gives the following:
ENG 1, 2, 3, 4 FAIL
Condition: One of these occurs:
•An engine failure
•An engine flameout
The explanation of the auto-relight feature says the following:
"A flameout is detected when a rapid decrease in N2 occurs, or N2 is less
than idle RPM."
By the way, the ENG 1, 2, 3, 4 FAIL EICAS Caution and it's associated beeper are inhibited on the ground, until lift-off occurs.
It does not directly give the exact trigger parameters as such, but a bit of reading gives the following:
ENG 1, 2, 3, 4 FAIL
Condition: One of these occurs:
•An engine failure
•An engine flameout
The explanation of the auto-relight feature says the following:
"A flameout is detected when a rapid decrease in N2 occurs, or N2 is less
than idle RPM."
By the way, the ENG 1, 2, 3, 4 FAIL EICAS Caution and it's associated beeper are inhibited on the ground, until lift-off occurs.
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What parameters trigger the ENG 1,2,3,4 FAIL message to show up?
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Last edited by 737Jock; 25th Jun 2012 at 21:32.