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slate100
27th Mar 2019, 08:15
At your company, are you doing "Engine Mode Selector" and "Packs" as "Read-and-do" in the Before Takeoff Checklist below the line?

Or is the PM setting the Engine Mode Selector and Packs as briefed and doing them as part of his before takeoff flow, and then the PF confirms their actual position during the checklist?

Same thing with "Engine Mode Selector" in the Approach Checklist...

Read and Do or as a flow first and confirm it with the checklist?

I'm pretty sure Airbus wants us to do it as a flow and then back it up with the checklist, but I'm hearing of guys doing it as read and do, ie., PM reads "packs" and PF orders them "on" or "off"...

Check Airman
27th Mar 2019, 09:26
We do it as a flow, but then again, we're known for trying to reinvent the wheel.

On a tangent, in normal operations, why'd you turn the packs off instead of using the APU?

speedrestriction
27th Mar 2019, 09:48
APU off to reduce fuel consumption. With large fleets and aircraft burning an extra 20kg per sector 6 times a day....44t of fuel per aircraft per year.

That equates to an additional 200t of CO2 per year per aircraft. Some airbus operators have hundreds of aircraft in their fleet, so it is not hard to see the major difference small SOP changes can make to cost and environmental impact.

pineteam
27th Mar 2019, 10:07
FCTM - PR -NP- GEN- USE OF NORMAL CHECK LIST

These checklists are of a non-action type (i.e. all actions should be completed from memory before the crew performs the checklist.

vilas
27th Mar 2019, 14:40
Airbus normal check lists are not read and do check lists. There's a flow followed by cheklist. But abnormal and supplementary are read and do. Abnormals are done by PM both read and do and Supplementary are read by PM done by PF.

Check Airman
27th Mar 2019, 20:34
APU off to reduce fuel consumption. With large fleets and aircraft burning an extra 20kg per sector 6 times a day....44t of fuel per aircraft per year.

That equates to an additional 200t of CO2 per year per aircraft. Some airbus operators have hundreds of aircraft in their fleet, so it is not hard to see the major difference small SOP changes can make to cost and environmental impact.
Thanks. I've only ever done packs off takeoffs at one airline, and it was quite miserable, as it was inevitably needed in the summer. How quickly does the 320 cabin get uncomfortable with packs off?

fantom
27th Mar 2019, 20:56
[QUOTE= How quickly does the 320 cabin get uncomfortable with packs off?[/QUOTE]

Damned quickly. Try Greece in the summer.

champair79
27th Mar 2019, 21:55
We don’t even have “engine mode selector” in our normal checklist. However, as mentioned previously it’s all a flow then a challenge and response to the checklist.

Packs off - we do them 90% of the time but have the authority to decide if it’s sensible. We won’t do them if it’s hot or a particularly complicated departure to reduce workload. Do some companies not allow any flexibility??

champ

Check Airman
28th Mar 2019, 06:48
SOP is lights off on the overhead. Nothing would prevent us from doing a packs off takeoff if necessary, but SOP is to run them off the APU if performance is a factor.

pineteam
28th Mar 2019, 07:32
In our company, almost no one do pack off take off. They don't really care about the Green Procedure; e.g. we always carry extra fuel even in cavok conditions. I sometimes do it for a maintenance aspect and to save a little bit of fuel, making planet Earth happy. It's quite noticeable how the fuel flow drops per engine on idle when you shut down the packs.