A330 Smoke/Fumes/Avncs smoke checklist
Hi all,
I have just done my A330 type rating session regarding the in-flight smoke procedure and I am still trying to understand the reason for this particular action.
At the last part of the checklist when we are configured in ELEC EMER CONFIG,
- At 3 min or 2000 FT AAL before landing
-> ATT HDG SWTG.............F/O on 3
-> ALL GEN.......................ON
I can understand the ALL GEN to be back ON (in order to restore the necessary power sources for approach and landing). But what is the reason for the ATT HDG SWTG to be F/O on 3? I am trying to look up in both FCTM and FCOM but still no relevant answer.
Thank you,
Subria