N21NB — Learjet 40 XR of Northbound Air LLC
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Live status
Last seen on radar: August 23, 2026.
Facts
- Type
- Learjet 40 XR
- Manufacturer
- Bombardier
- Operator
- Northbound Air LLC
- Built
- 2006
- Serial (MSN)
- 2045
- ICAO hex
- A1B857
Rarity & spotters
★★★★☆N21NB is one of 64 Learjet 40 XR in our database.
Activity
From our radar history of the last 7 days.
- Flights
- 2
- Airborne time
- 0 h
- Max altitude
- 1,850 ft
- Typical cruise
- 2,675 ft · 129 kt
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Airborne minutes per weekday (UTC)
00
04
08
12
16
20
Airborne minutes per hour of day (UTC)
About the type: Learjet 45
The Learjet 45 (LJ45) is a mid-size business jet aircraft produced by the Learjet Division of Bombardier Aerospace.
More Learjet 40 XR
Track it live on the map
See N21NB and the surrounding airspace in real time in the spotter radar — get the Aero.Academy app now.