| Learjet 28 ✕ | Learjet 31 ✕ | |
|---|---|---|
| Manufacturer | Learjet | Learjet |
| Description | The Learjet 28 is an American eight-to-ten-seat (two crew and six to eight passengers), twin-engine, high-speed business jet, intended to be the successor to the Learjet 25. | The Learjet 31 is an American built twin-engined, high speed business jet. |
| ICAO Code | LJ31 | |
| First Flight | 1977-08-24 | 1987-05-11 |
| Entry Into service | 1990-10-01 | |
| Production End | 1982-01-01 | 2003-01-01 |
| Designer | Learjet | |
| Type | Business jet | Business jet |
| Length (m) | 14.51 | 14.6304 |
| Height (m) | 3.73 | 3.6576 |
| Cockpit Crew | 2 | 2 |
| Max Seating | 8 | 8 |
| Max Speed (km/h) | 883.5299 | |
| Cruise Speed (km/h) | 756.3917 | 828.8122 |
| Min Speed (km/h) | 165 | 156.1064 |
| Max Ceiling (m) | 15544.8 | 15544.8 |
| Rate of Climb (m/s) | 27.8384 | |
| Capacity Description | 8 passengers | 8 passengers |
| Max Mach (Mach) | 0.81 | |
| National Origin | Azerbaijan | Azerbaijan |
| Number Built | 9 | 246 |
| Powerplant Description | 2 × General Electric CJ-610-8A turbojet | 2 × Garrett TFE731-2 turbofan, 15.6 kN thrust each |
| Primary Users | Private, NASA | |
| Status | Retired | Active |
| Wikipedia Article (URL) | en.wikipedia.org/wiki/Learjet_28 | en.wikipedia.org/wiki/Learjet_31 |
| Flat Wing Span (m) | 13.35 | 13.1064 |
| Flat Wing Area (m²) | 24.5729 | 24.5729 |
| Wake Category | M | |
| Aircraft Engine | Garrett TFE731 | |
| Number of Engines | 2 | 2 |