Handle9:

 

sbiddle:

 

Sup:

 

Just on the Aircraft thingy and the public transport system.

 

Planes have super duper air flow ventilation systems.

 

Buses and trains do not.

 

That is why of the thousands of flights coming into New Zealand carrying Covid, there is minimal on spread in a air cabin. And that included the old days....before pre departure testing, however there was some spread....long haul flights with your mask off to eat cannot prevent every infection.

 

 

And the one documented case of the Emirates plane to NZ was the subject of quite a few details articles in NZ media (one such example here from Newsroom and there was another written by Siouxsie Wiles that was in the Spinoff).

 

All theorised about how spread could have occured onboard, but presumably due to their lack of understanding of how aircraft operate didn't take in or mention a key aspect that was reported overseas and that was that the APU was switched off something like 30 mins while the plane was on the ground refuelling at Kuala Lumpur. Nobody left the plane during this time, and the significance of the APU being shut down is that there would have been no air circulating in the cabin which is clearly the perfect scenario for spread.

 

 

Not necessarily. If it was on a GPU and PCA stand, which is when the APU is normally switched off, then that is taken over by airport supply.

 

In this case there it was confirmed no A/C was running for ~30 mins of the 2 hour ground stop for refuelling in one of the reports into this... So it really was the perfect scenario for spread being stuck in a plane with no moving air!