N15GT

The airframe bearing registration N15GT is a Bombardier BD-100-1A10 Challenger 300 built in 2006 with manufacturer serial number 20120. Ownership records list Garrett Thornburg (Thornburg Mortgage Advisory Corp) as the registered owner; broader operator or home-base details are not published in the supplied data. The aircraft is registered in the US, and no separate valuation or condition summary was provided. The Challenger 300 airframe is presented in corporate configuration according to the listing for N15GT, though the specific interior specification sheet for this serial is not confirmed.

The cabin for N15GT is recorded as a typical 8‑place executive layout with a double‑club seating arrangement, a forward galley and an enclosed lavatory, reflecting a corporate configuration though the detailed interior spec sheet for serial 20120 is not confirmed. Avionics are commonly fitted to the Challenger 300 series with Collins / Rockwell Collins Pro Line 21, and while this is the common fit, the specific avionics fit for N15GT (MSN 20120) is not independently verified in the public documents provided. With a 3,100 nm range and cruise near 459 kts, the aircraft is suited to medium‑ to long‑range executive missions and transcontinental U.S. operations; maintenance considerations follow typical Bombardier Challenger 300 schedules for dual‑engine Honeywell HTF7000 powerplants.

The Bombardier BD-100-1A10 Challenger 300 family occupies the light‑large cabin super‑midsize segment, offering transcontinental capability and a relatively high cruise speed for its class. Competitors in this performance niche typically include other super‑midsize business jets offering similar range and cabin accommodations. Buyer and charter demand historically target corporate fleets and high‑end charter operators; resale and maintenance considerations center on engine maintenance tracking for the HTF7000 series and condition of the executive interior, both of which influence asset value for a 2006 serial like 20120.