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

Tbo Extension, LLC

Named as the FAA publishes it on its approvals.

Holds 2 approved modifications, most of them for the Cessna S550. FAA spelling: TBO Extension, LLC.

Approved modifications 2 · newest first

Cessna S550 1Cessna 560 Citation V, Ultra, Encore and Excel 1
2026-06-08ST04201NY · Installation of ENode Engine Data Acquisition Unit & IONode Digital Data Recorder · 500, 560, S550
2026-06-08ST04187NY · Installation of of Enode Engine Data Acquisition Unit & Ionode Digital Data Recorder · 400, 400A

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