FlyDubai incident 30/9

[Quickstatus]

the electric motor driven pumps kick in.

But what provides power to the electric pump?
JB mentioned the windmilling engines and/or residual power in batteries?

 

[AviatorInsight]

But what provides power to the electric pump?
JB mentioned the windmilling engines and/or residual power in batteries?

Yes, you're right. My mistake, it was a late one yesterday. They are powered by the transfer bus not the standby AC power bus. So they will get some residual power from the generator with a windmilling engine if the N2 can be kept above a certain percentage.

 

[John82]

So of the yet to be proven allegations flying around are disturbing. Such as “the co-pilot intended to repeat 9-11 into some Israeli buildings.”

Apparently this came from the terrorist in interrogation.

 

[jb747]

Yes, you're right. My mistake, it was a late one yesterday. They are powered by the transfer bus not the standby AC power bus. So they will get some residual power from the generator with a windmilling engine if the N2 can be kept above a certain percentage.

Given the speed, wouldn't the engine driven pumps still be providing substantial pressure?

 

[AviatorInsight]

Given the speed, wouldn't the engine driven pumps still be providing substantial pressure?

I had to open up the flight simulator for this and yes, the EDP are still providing pressure, and therefore you still have hydraulic power. No manual reversion.

The N2 throughout the descent was still high. To do a windmill start the NG must be at minimum 11% N2 and 8.5% on the MAX.