The Port Authority of New York and New Jersey, commonly referred to as "The Port Authority," doesn't publish much spatial data.

Port Authority Properties

One convoluted option to find Port Authority Properties in New York City is to dig them out of the Department of City Planning Map Primary Land Use Tax Lot Output dataset.

https://github.com/mattyschell/nyc-spatial-rolodex/wiki/Mappluto

Select tax lots where

• OwnerName is like '%PORT AUTHORITY%'
• borough = 'QN' and block = 926 and lot = 1

The second one gets La Guardia Airport, which as of late 2019 is listed as owned by "NYC DSBS". The result set should be approximately 130 tax lots.