Electrical Buses

[funkyfranky]

Hi all,

 

I wanted to start up this lovely bird according to the NATOPS procedures. However, I'm hanging already at the Pre-Start (page 7-12).

 

BATT and GEN switches are on at this point but all warning and caution lights remain out. According to the NATOPS manual, you should at this step check, e.g. whether the four landing gear indicator lights are green. But they are also out.

I have to turn on the APU so that the Harrier "awakens". But the APU should not be necessary at this early step in the procedure. Interestingly, when I turn off the APU again, the important lights stay on.

 

So basically, what I want to say is that there might be a problem with the electrical buses implementation.

 

Plus the question, if all systems are implemented further down the line, will we be able to start the aircraft according to the NATOPS manual?

[Zeus67]

On a cold and dark aircraft, all warning, caution and advisory lights remain dark until one of these two conditions are met:

 

1. You click the Compass light/test lights switch to the test light position.

2. The engine is on ground idle.

[funkyfranky]

1. You click the Compass light/test lights switch to the test light position.

Perfect :) That was what I was missing. Thanks!

[Zarma]

On a cold and dark aircraft, all warning, caution and advisory lights remain dark until one of these two conditions are met:

 

1. You click the Compass light/test lights switch to the test light position.

2. The engine is on ground idle.

 

or you turn on the APU Gen ?