The U.S. aircraft register, updated daily
Who holds what · as the FAA records the name

Neptune, INC

Holds 2 approved modifications. FAA spelling: Neptune, Inc.

Approved modifications 2 · newest first

1995-05-11ST09038SC · Installation of two Westinghouse J34-WE-36 engines. · (SP-2E) P2V-5F
1995-05-11ST09037SC · Installation of two Curtiss-Wright R-3350-32WA engines. · (SP-2E) P2V-5F

Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.