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

Stockbridge William D

Holds 2 approved modifications. FAA spelling: Stockbridge William D.

Approved modifications 2 · newest first

1989-12-04SE557NE · Installation of oil tank shuttle valve. · JT8D-17AR, JT8D-1B, JT8D-5
1988-06-14SE435NE · Installation of an oil tank filler opening shuttle valve. · JT9D-7H, JT9D-20J, JT9D-7J

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.