N18AX Learjet 45
- 12Seats
- 1,700 nmRange
- 436 ktCruise
- 51,000 ftCeiling
INSIDE
The Learjet 45 cabin.
Illustrations of a typical Learjet 45 cabin, not N18AX’s. Every aircraft’s completion differs.
RADAR ESTIMATE
What N18AX is worth, and where it’s heading.
Radar's value model doesn't cover the Learjet 45 on its own yet, so this borrows the Cessna Citation XLS+ curve, scales it to N18AX's listing-based estimate and widens the range to match. An estimate, not an appraisal.
N18AX · On program · wider range
$2.3M
- In 2031
- $1.6M
- Value kept
- 70%
- Per year
- −6.8%
- Program effect
- $128.4K
- Confidence
- Low
5-year projection
The Cessna Citation XLS+ curve, scaled to this Learjet 45
SPECIFICATIONS
Learjet 45 specs
Published figures for the type, from public sources. A given aircraft varies with its completion, weight and mods.
- Model
- Learjet 45
- Serial number
- 548
- Engines
- 2 × Honeywell TFE731-20 (series)
- Thrust
- 3,500 lbf each
- Seats
- Up to 12
- Range
- 1,700 nm
- Cruise
- 436 ktas
- Published Mach
- 0.81
- Ceiling
- 51,000 ft
- Fuel capacity
- 896 US gal
- ICAO type
- LJ45
THE AIRCRAFT’S LIFE
N18AX on the registry.
Registration events from FAA records, compiled November 2025. Maintenance, damage and component history live in the logbooks, not the registry.
-
Registered as N18AX
To N18AX LLC.
FAA registry -
Latest FAA registry action
FAA registry
FAA REGISTRATION
Registration details
- Registration
- N18AX
- Status
- Current as of November 2025
- Certificate issued
- Jan 23, 2024
- Last FAA action
- Jul 19, 2025
- Registration expires
- Jan 31, 2031
- Mode S code (hex)
- A13E69
- Aircraft category
- Fixed-wing multi-engine
- Weight class
- Over 20,000lbs
From FAA registry data as of November 2025. Check the FAA registry for the current record.
OWNERSHIP
Registered owner
N18AX LLC
EQUIPMENT AND HISTORY
As reported in public sources
- Avionics
- Honeywell Primus-series (typical Primus 1000/Primus II displays)
- Cabin
- Flat-floor executive cabin; typical 7-9 passenger executive layout with forward galley and aft lavatory (registry lists 12 seats).
- Interior
- Executive club seating, galley, full-width aft lavatory (specific interior for this tail not publicly listed).
Listings and registries are not the logbooks. A pre-buy confirms equipment, program status and damage history from the records themselves.
RESEARCH NOTES
About N18AX
Compiled with AI assistance from the public sources listed below, November 2025. Not checked against the aircraft's logbooks.
Overview
This article covers the specific Learjet 45 airframe bearing registration N18AX, serial number 548. Manufacturer records attribute the type to Learjet Inc; the documented owner is N18AX LLC (an LLC based in Tulsa, OK, US). Registry entries list a 12-seat configuration and associate the airframe with its Tulsa, Oklahoma owner.
Operations & Cabin
The airframe is outfitted with a flat-floor executive cabin that typically accommodates a 7-9 passenger executive layout with a forward galley and an aft lavatory, while registry information specifically lists 12 seats. Avionics fit is described as Honeywell Primus-series, using typical Primus 1000/Primus II displays for flight, navigation and systems integration. Operational profiles for this registration would align with short- to medium-range executive transport missions between regional business centers, leveraging its cruise speed of 436 kts and a maximum operating ceiling of 51,000 ft for efficient point-to-point travel. Based at or operated from the owner’s location in Tulsa, OK, the airframe’s configuration supports corporate travel, on-demand charter or owner-operated business use; specific maintenance history and unique onboard amenities beyond the standard cabin fit are not published.
Model & Market Context
The airframe belongs to the Learjet 45 family, positioned as a light-medium business jet offering transcontinental capability within the small-cabin segment. Its combination of 1,700 nm range, 436 kts cruise speed and dual Honeywell TFE731-20 engines places it against contemporaries in the light business jet market seeking fast cruise and high-altitude performance.
SOURCES
Where this page comes from
Built from FAA registry records, manufacturer specifications, and public flight-tracking and market data, compiled November 2025. Values come from Radar’s aircraft value model. Owners and operators can ask for a correction or removal.
BUYING, SELLING OR FINANCING
What to check before a deal
- Pre-buy records reviewWhat to read in the logbooks before you sign
- Aircraft title searchLiens, registrations and the chain of title
- Aircraft valuationHow records, time and programs move the price
- Aircraft maintenance recordsWhat a complete records package holds
Own or manage N18AX? Put its logbooks in Radar.
Radar reads every logbook page, typed or handwritten, and builds one searchable record for the aircraft: times, inspections, ADs and components, each tied to the page it came from.
N18AX is not a Radar customer record. This page is built from public sources as of November 2025. Owners and operators can ask for a correction or removal.