Reading the letter, reading between the lines, it seems like an airline would have to report this to NTSB/FAA if a passenger requests medical assistance upon la

Reading the letter, reading between the lines, it seems like an airline would have to report this to NTSB/FAA if a passenger requests medical assistance upon landing. We're always in a hurry when flying which probably contributes to under-reporting. It also feels like the primary risk here is that the pilots will pass out and crash the plane, not main cabin toxicity. The pilot in his letter states clearly that had he not put on his mask when he felt the onset of tunnel vision "we would've killed every person on that aircraft". By that point the captain was already slumped over, eyes half open in a dead stare. Meanwhile 200+ people are in the back oblivious. Chilling.