a dash of cold water
G'day TT!!!!!!!!!!!!!
I'm sorry to be the one who who might dash your hopes. You ask about the 319, not the CRJ. Fuel capacity is 23859 litres. MTOW variants are 64/68/70/75.5 tonnes. MLW variants 61/62.5 tonnes. MZFW variants 57/58.5 tonnes. So A319-100 with V2527M-A5, MTOW 75.5 tonnes, SEPCARBIII - BSCU Std9 or EM2, JAR and all the ETOPs certification you need...
I don't think you can do it so I have shortened the route....
Flight 1 Outbound to mystery destination, payload ~12152kg. Distance 2324nm HW 17kts FL350/390 at M0.78 TOW 69567kg LW 56817kg, Block fuel 12946kg, Cont 744kg, Resv 3192kg, Time 5+44.
Flight 2 Inbound from mystery destination, sameish ~ payload . HW 7kts FL330/370 at M0.78 TOW 71692kg LW 56822kg Block fuel 13065kg, Cont 851kg, Resv 5182kg, Time 5+37.
By my book I therefore would not attempt 3149nm being more or less at my MTOW with 108 pax at 82.5kg apiece and 30kg bags and only getting 2324nm along the way.
Track distances = GC distances + 5%, En-route and diversion winds = 85 % annual reliability, Winds in cruise reduced to 70% for climb and descent, ISA+10 en-route temperature, Taxi-out 10 min / Taxi-in 5 min [in your dreams buddy], Cruise M0.78, En-route allowance = 5% of trip fuel and an EWAG (educated wild assed guess) at diversion fuel at LRC + 30 min holding at 1500 ft above. Fuel at 0.803kg/litre.
Nope. For me I'd say ONP.
Best Rgds
The "E"