A320 engine start procedure change
Thread Starter
Joined: Jun 2020
Posts: 5
Likes: 1
From: Donunder
A320 engine start procedure change
Anyone know why the start procedure changed to start number 1 first? I’ve heard rumours that it is to minimise air bubbles in the fuel lines or to pressurise green system hydraulics first . Standardisation across the fleet?
Joined: Mar 2012
Posts: 2,605
Likes: 154
From: Having a margarita on the beach
Joined: Feb 2000
Posts: 4,704
Likes: 589
From: 500 miles from Chaikhosi, Yogistan
To align with single engine taxi out procedures. That itself has been simplified to allow taxiing pilot to focus on taxi and the PM do do the engine start bits without needing PF input.
Joined: Nov 2010
Posts: 1,167
Likes: 180
From: USA
Joined: Nov 2006
Posts: 367
Likes: 0
From: Tropics
According to the official FCOM/FCTM advance copies by Airbus, the reason for the change is to incorporate single-engine taxi out into the SOPs and it would be done by memory, just like single-engine in.
Joined: Aug 2007
Posts: 370
Likes: 178
From: The sky
No. 2 used to be started first as it ensured yellow hydraulics were available for the park brake after the push. The single engine taxi procedure requires the yellow accumulator pressure to be checked prior to push as if only no.1 is started the accumulator is the only source of brake pressure until the yellow elec pump is selected on.
I guess airbus have decided having a single source of yellow hyd pressure during the push is acceptable.
LD
I guess airbus have decided having a single source of yellow hyd pressure during the push is acceptable.
LD
