Hey fellows of this community. I have a question concerning about the correct way to startup the engines of this magnificent flying machine. More especificic I can say that I'm starting the engines using AUTOSTART option but I don´t know which percentage of N2, gives me the permission to move the fuel control lever for fuel feeding, I have read in FCOM manuals but they don´t show the step by step procedure and percentages of N2.

 

Another question, is that correct to derate the engines for short flights until rates of 80. (this is lower rates than TO-1 or TO.-2 this gives derate about 89 or 92).

 

Thanks in advance

 

:unknw: 

 

 

 

When using autostart, the FADEC system automatically controls when the fuel is turned on. To enable this to happen, you need to move the fuel control switch to RUN immediately after selecting START on the overhead. The fuel will be turned on automatically at the correct N2.

 

As for takeoff derates, these should be used according to parameters such as takeoff weight, ambient conditions and runway length. There is a derate calculator spreadsheet available to download from Avsim which will help you do this. See this thread for more information:

 

http://forum.avsim.net/topic/420238-derate-calculator-for-777-200lr-available/

What Kevin said, except that the fuel control switch should be set to run once you see a rise in oil pressure, as that parameter isn't monitored by the auto start system.

What Kevin said, except that the fuel control switch should be set to run once you see a rise in oil pressure, as that parameter isn't monitored by the auto start system.

Yes and no. Some operators put the fuel switch on then monitor oil pressure rise. Others wait for oil pressure indication before fuel switch on. I was trying to keep things simple for the OP.

Yes and no. Some operators put the fuel switch on then monitor oil pressure rise. Others wait for oil pressure indication before fuel switch on. I was trying to keep things simple for the OP.

correct.