An aircraft is certified to carry a maximum of 240 passengers; it is configured to carry 200 and actually has 180 passengers on board. The minimum number of drop-down oxygen masks provided must be:
180
200
220
240
An aircraft is certified to carry a maximum of 240 passengers; it is configured to carry 200 and actually has 180 passengers on board. The minimum number of drop-down oxygen masks provided must be: