A320 Blue Elec pump pb

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26th December 2015 | 10:26

#1 (permalink)

dream747

Thread Starter

Joined: Nov 2006

Posts: 367

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From: Tropics

A320 Blue Elec pump pb

Does anyone know why is this switch guarded? Couldn't think any good reason for it to be!

Cheers.

26th December 2015 | 10:32

#2 (permalink)

mcdhu

Joined: Mar 2000

Posts: 1,337

Likes: 1

From: Sunrise Senior Living

I guess because it is your Pb of last resort. GRN+YLO fail, with the BLU Pb switched off, your life becomes extremely difficult. It should therefore only be switched off when required by the ECAM and with a double check.

mcdhu

26th December 2015 | 12:32

#3 (permalink)

Amadis of Gaul

Joined: Jun 2014

Posts: 1,052

Likes: 72

From: Village of Santo Poco

Either that or EADS got a good deal on some switch guards and had to put them all somewhere.

26th December 2015 | 19:26

#4 (permalink)

Cough

Joined: Jul 2000

Posts: 1,061

Likes: 20

From: My views - Not my employer!

Turn off the yellow hyd pump -> PTU takes over from green. OR
Turn off the green hyd pump -> PTU takes over from yellow.

Net result - 3 working hydraulic systems.

Turn off blue pump -> errrm, well the system shuts down!

Net result - 1 lost hydraulic system. Good reason for a guard?