Video and photos of an Air New Zealand pilot posing with an inflatable doll in the cockpit and an air hostess spitting water with the caption "wish I could spit on passengers like this" have been posted online.
Two staff members have been stood down by the airline while an investigation takes places, another no longer works there.
The images were believed to have been shared to Facebook and Instagram after staff sent them on Snapchat.
Air New Zealand told the Herald the images and video was produced between one and four years ago.