Automatic payload slightly off when planning in airframe's "non-native" weight unit

For example, if I plan using e.g. the default A319 in kilograms with passengers AUTO and freight NONE (BER layout):

....................................................................
CODES   PAX   CARGO   PTTL    UNDL    :
105     126   3038    13040   3198Z   :
                                      :
DOM           ZFM     TOM     LAM     :
42262   MAL   58500   76500   62500   :
        PLN   55302   63211   57975   :     SIGNATURE COMMANDER

…or about 103.5 kgs per passenger+luggage (instead of the expected ~104.33). Notice we are not limited by MZFW, MTOW or MLW.

If I manually specify 126 passengers, I get the expected results:

CODES   PAX   CARGO   PTTL    UNDL    :
105     126   3143    13145   3093Z   :
                                      :
DOM           ZFM     TOM     LAM     :
42262   MAL   58500   76500   62500   :
        PLN   55407   63320   58083   :     SIGNATURE COMMANDER

When I instead plan in pounds, I get the same payload weight regardless of whether I specify AUTO or the same passenger count manually, 230 lbs per passenger with luggage exactly.

I get the “opposite” behavior when using an airframe that’s set up in kilograms (for example the ToLiSS A319 airframes).

Planning in kilograms, I get 100 kg per passenger exactly, regardless of whether I use AUTO or manually specify a passenger count. But when planning in pounds:

AUTO

CODES   PAX   CARGO   PTTL    UNDL    :
105     127   0       27778   11193Z  :
                                      :
DOM           ZFM     TOM     LAM     :
89999   MAL   128970  154323  137789  :
        PLN   117777  134462  123594  :     SIGNATURE COMMANDER

127 PAX

CODES   PAX   CARGO   PTTL    UNDL    :
105     127   0       27999   10972Z  :
                                      :
DOM           ZFM     TOM     LAM     :
89999   MAL   128970  154323  137789  :
        PLN   117998  134807  123830  :     SIGNATURE COMMANDER

This doesn’t seem intentional.

Regards,

Tim

Hello Tim, I will send this up. It could be a rounding issue as well?

If it is rounding, there would still be a bug in that Simbrief is capable of rounding correctly when you manually specify the passenger count, so it should be able to do the same correct rounding when it picks the passenger count automatically :slight_smile:

Regards,

Tim

Hi Tim, I think I’ve sorted it for all airframe/unit combinations.

Let me know if you still see any discrepancies.

Cheers,

Appears to work now, thanks :slight_smile:

Will keep an eye on it just in case.

Regards,

Tim

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