Performance Calculations

[Killaroo]

Question for you CX/KA guys.
When doing performance calculations, do you have a specific pro-forma on which you write the figures and retain, or do you scribble them on the back of a fag packet and lose it after you use it?

Or maybe you have the computerized version? Love to know.

[Landflap]

CX pilots have to demonstrate ability to manipulate highly complex performance problems, in their heads, at the initial selection criteria. This ability is honed during the boot camp cloning for those very few to pass the rigorous remainder of the selection procedure. So, thereafter, performance calculations are a walk in the park ole mate.

[Killaroo]

Fag packet job then.

[744drv]

[QUOTE] or do you scribble them on the back of a fag packet and lose it after you use it?/QUOTE]

That doesn't sound compatible with the blame culture that is fostered within our industry!!

The answer to you question is computerised with 3 computer generated back up options …. only then do we regress to getting a chart out and start looking up tables.

[Will IB Fayed]

I generally use the vibe. Stick my head out the window and say, "yep Flex 45, rotate about 152".....

[BuzzBox]

In case you're looking for a sensible answer: we input the info (i.e. runway, weight, temp, QNH, etc) via ACARS, the ACARS RTOW system does the calculations and returns the data to the aircraft via ACARS. The RTOW data is printed out then filed with the rest of the flight paperwork after use. There are a couple of backup systems in place in case the ACARS RTOW doesn't work, but the upshot is that a copy of the data is always retained.

[Killaroo]

Yes I'm seriously interested. Thanks for the answer BuzzBox, especially that final point. I wonder is that not a CAD prerequisite?
Not in some places in HK it seems.

[Sue Ridgepipe]

So no chance of doing an Emirates then and taking out the localizer antenna at the wrong end of the runway?

[Cider30]

Quote:
So no chance of doing an Emirates then and taking out the localizer antenna at the wrong end of the runway?

Is there a right end to take out a localizer antenna ?

I think you will find the W/B computer to be the best weapon against inputting wrong data. Don't think it won't happen again.

[swh]

Originally Posted by Killaroo

I wonder is that not a CAD prerequisite?
Not in some places in HK it seems.

CAD 360

15. RETENTION OF DOCUMENTS
15.1 Operators should conduct audits of returned flight documentation to provide an insight into the standard of operation being demonstrated by their crews. To facilitate these audits the following additional documents, if appropriate, which Inspectors will wish to examine as part of their routine inspection programmes, should be retained for a minimum of three months after the flight to which they pertain:
- take-off/landing data card - the ‘bug card’;
- navigation flight plan forms/PLOGs;
- fuel log;
- record of performance calculations;
- flight progress chart, where appropriate;
- commander’s copy of the loadsheet.
In addition for EDTOS flights,
- dispatch and en route weather; relevant NOTAMS.

[SMOC]

The nice little addition to the CX version is having to input both the ZFW and the TOW into the ACARS RTOW, not perfect but usually prevents entering the ZFW as the TOW. I don't think it'll pick up a ZFW entered twice though?

[nitpicker330]

I'm pretty sure it won't accept the same numerical value in both fields, neither will it accept ZFW TOW reversed by mistake.

Also on the AIRBUS if the ACARS figures are different to INIT B when you send off the request it prints a warning in the data it sends.

[Killaroo]

Quote:
Originally Posted by Killaroo
I wonder is that not a CAD prerequisite?
Not in some places in HK it seems.
CAD 360

15. RETENTION OF DOCUMENTS
15.1 Operators should conduct audits of returned flight documentation to provide an insight into the standard of operation being demonstrated by their crews. To facilitate these audits the following additional documents, if appropriate, which Inspectors will wish to examine as part of their routine inspection programmes, should be retained for a minimum of three months after the flight to which they pertain:
- take-off/landing data card - the ‘bug card’;
- navigation flight plan forms/PLOGs;
- fuel log;
- record of performance calculations;
- flight progress chart, where appropriate;
- commander’s copy of the loadsheet.

Bingo. Thanks mate.