|Quoting rrobards2 (Reply 1):|
As far on short/medium haul aircraft, it's still better for the vacuum system. On our 737s, at MOST, the waste tank will fill up half way on a 5-6 hr transcon flight...and that's if people are constantly using it.
|Quoting 1337Delta764 (Reply 5):|
So, does anyone know the particular reason Boeing chose to go with the vacuum flush system on the 767 while chose to use the recirculating liquid on the 757?
|Quoting SXDFC (Reply 6):|
since the 752 and 762 were introduced around the same time, they shared the same recirculating flush system
|Quoting Tristarsteve (Reply 10):|
When the A320 was introduced 4 years later, Airbus gave the buyers the choice. As far as I know only BCal opted for the blue water lavs, and in BA we suffered from this decision for the next 20 years. The A320 blue water lav was very unreliable, and the vacuum system was much better. Another problem was that because these 10 aircraft were the only A320 with a fwd toilet service point, most ramp workers managed to forget it, so the toilet filled up on the next sector.
|Quoting aerotech777 (Thread starter):|
Modern aircraft are fitted vacuum waste system at the opposite of old aircraft that are fitted with recirculating waste system.
a) What are advantages and the disadvantages of vacuum waste system?
b) What are advantages and the disadvantages of recirculating waste system?
c) How often the toilet is used in short/medium aircraft? How full the waste tank?
d) Do you think it is worth to use recirculating waste system in modern short/medium aircraft? If yes/no, why?
|Quoting Skydrol (Reply 12):|
Note: Lockheed 1011 recirculating system was different, and five aft lavatories used a common holding tank in the aft cargo area, similar to a vacuum system
|Quoting SXDFC (Reply 6):|
I've also heard that some of the 757s have about 4 service ports because of this. Please don't quote me as I am pretty sure I've read this on here, and I have never worked either A/C type.
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