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Guest A320_FO

A320 W&B / Perf

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Guest A320_FO

Hi all,some weeks ago, I promised someone in the AVSIM flight school to set him up with some real world A320 W&B/Perf stuff. As this seems the more appropriate forum, I'll just post it in here as well:-> Flight from Vienna to Zurich, Bale-Mulhouse as alternate.-> Passengers: 108-> Baggage: 1086 kgHold 1: 33 kgHold 4: 1053 kg-> Routing: SITNI3C SITNI UL856 NEGRA NEGRA3ZCruizing level: FL340 (temp @ FL340 -> -60)-> WindCruize:SBG: 330/75 (fuel check: 3500 kg)TRAUN: 330/72 (fuel check: 3400 kg)Descent:@FL 310 -> 330/61@FL 200 -> 320/44@FL 100 -> 290/29-> Fuel Figures:Trip Fuel: 2700 kgContingency: 500 kgAlternate incl. 30`holding: 2400 kgMin. Takeoff-Fuel: 5600 kgExtra: 900 kgTake-Off Fuel: 6500 kgTaxi: 300 kgBlock-Fuel: 6800 kg-> Mass&Balance:DOM 44163ZFM 53252TOF 6500TOM 59752 (trim 29,3)TF 2700LAM 57052 (trim 28,3)Trim: 0,1UP-> Performance:v1 - 132vr - 132v2 - 134max eng out acceleration: 4297 (3300 is good enough - msa)flex temperature: 69-> METAR VIERWY 29 transition FL60 190/6 4000 -rabr few/020 broken/037 broken/050 1/1 Q1021 local moderate ice below FL160 tempo 2000 runway 29 wet windschear @ 600 ft 270/24 (max 30)-> METAR ZRHRWY 14 190/6 4000 -dzra F/004 S/008 B/013 4/3 Q1024 nosig moderate turb short final rwy 14 & 16 windshear warning rwy 14SIGMET: mod ice blw FL170That's it!Happy flying

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Hi. Thank you for a very informative set of parameters. I will certainly be trying to reproduce this flight as soon as I can. The problem with posting here is that arm chair pilots like myself will have a million questions LOL. My question is that I am intrigued by the term Mass used in Mass and balance. Does that mean that in real world operations everything is related to the mass and not the weight, or am i reading too much into the data?. From physics days i remember that weight= mass* acceleration, any light on this would be appreciated. The more i learn the more i want to knowmany thanksJohn Calleja


John Calleja

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Guest A320_FO

:-)Well, some time ago, it was actually called weight and balance. Then, when JAR/FCL was introduced in Europe, some clever people discovered that it would be more correct to perform a Mass and Balance calculation. Which makes sense, while when it comes to "balancing", the same amount of mass will always result in the same amount of trim, everywhere - even on the moon. The measured weight would be completely differently though.Hmm, hope that helps,regards!

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Hi again.Thank you for taking the time to reply, Your comments make perfect sense, and result in unified trim anywhere in the world for the same mass.Now I can try the figures out in the PSS A320 as best as i understand themregardsJohn Calleja


John Calleja

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