A woman passenger allegedly breastfed a cat on board a Delta flight from Atlanta

A passenger allegedly made a desperate plea to flight crew after spotting a person engaging in a gross act with her pet cat.

A screenshot has gone viral of what looks like a pilot messaging system that suggests a passenger on Delta Air flight DL1360 to Atlanta began breastfeeding her cat and refused to stop despite repeated requests from the crew.

“Pax (passenger) in (seat) 13A is breastfeeding a cat and will not put cat back in its carrier when FA (flight attendant) requested,” reads the ACARS memo.

The pilot requested Delta’s Redcoat ground team meet the customer after landing to reprimand her.

According to an online source, the carrier was contacted for comment to confirm whether the incident took place.

Delta has tightened regulations regarding emotional support animals over the last few years after experiencing an 84 per cent increase in incidents.

Passengers are still allowed to bring their small dogs and cats in the cabin but they must stay in a kennel under the seat in front for the entire flight.

This does include an additional charge for customers.