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Forum: Tech Log

28th May 2012, 22:28

Replies: 18

737-800 aux gearbox

Views: 5,524

Posted By barit1

Thanks - guess I missed that. :O

Thanks - guess I missed that. :O

Forum: Tech Log

28th May 2012, 19:02

Replies: 18

737-800 aux gearbox

Views: 5,524

Posted By barit1

Back to the sim scenario: Yes, the AGB stops...

Back to the sim scenario:

Yes, the AGB stops turning rather quickly. It's driving pumps and accessories that take a lot of horsepower, and without a driving torque from the N2 rotor, everything...

Forum: Tech Log

28th May 2012, 13:50

Replies: 18

737-800 aux gearbox

Views: 5,524

Posted By barit1

Oh well, if it happened in the sim it must be...

Oh well, if it happened in the sim it must be so... :ugh:

Forum: Tech Log

28th May 2012, 01:39

Replies: 18

737-800 aux gearbox

Views: 5,524

Posted By barit1

I predicated my proposition on a quill shaft...

I predicated my proposition on a quill shaft failure, not a AGB seizure. I cannot recall a single outright AGB failure, although I'd never say it CAN'T happen.

Forum: Tech Log

27th May 2012, 17:14

Replies: 18

737-800 aux gearbox

Views: 5,524

Posted By barit1

If the N2 sensor were located on the AGB, and...

If the N2 sensor were located on the AGB, and it's the quill shaft that failed, you WOULD get an N2 indication when engaging the starter. Think about it; starter drives AGB, AGB turns the N2 gage.
...

Forum: Tech Log

26th May 2012, 18:53

Replies: 18

737-800 aux gearbox

Views: 5,524

Posted By barit1

N2 display??

Working from memory here -

The 738 (and other NG series) have the CFM56-7 donk w/FADEC. The N2 sensor is on the mainshaft in the #3 bearing area, and thus should still function in case of AGB or...

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