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Illustration of a Learjet 31A. Not a photo of N125FS.
Illustration of the Learjet 31A, not a photo of N125FS.

N125FS 1996 Learjet 31A

Serial number 125. Registered to Aircraft Trustee Services Inc Trustee, Dover, DE, US.

  • 1996Built
  • 10Seats
  • 1,290 nmRange
  • 441 ktCruise
  • 51,000 ftCeiling

INSIDE

The Learjet 31A cabin.

Illustrations of a typical Learjet 31A cabin, not N125FS’s. Every aircraft’s completion differs.

Warm natural light illuminates the Learjet 35A's low, narrow cabin with cream leather club chairs, a three-place rear bench, small oval windows and polished wood veneer.
A typical Learjet 31A cabin.
Top-down view of a Learjet 31A cabin. Typical 8-passenger layout: a club of four, a three-place aft bench, forward belted lavatory.
Typical 8-passenger layout: a club of four, a three-place aft bench, forward belted lavatory.

RADAR ESTIMATE

What N125FS is worth, and where it’s heading.

Radar's value model doesn't cover the Learjet 31A on its own yet, so this borrows the Embraer Phenom 300/300E curve, scales it to N125FS's listing-based estimate and widens the range to match. An estimate, not an appraisal.

N125FS · On program · wider range

$1.1M

$801.5K$1.4M
In 2031
$751.1K
Value kept
68%
Per year
−7.3%
Program effect
$62.1K
Confidence
Low

5-year projection

The Embraer Phenom 300/300E curve, scaled to this Learjet 31A

$520.1K$779K$1M$1.3MNow20272028202920302031On program $751.1KOff program $639.5K
Engine program
Horizon
Open the aircraft value tool

SPECIFICATIONS

Learjet 31A specs

Published figures for the type, from public sources. A given aircraft varies with its completion, weight and mods.

Model
Learjet 31A
Year
1996
Serial number
125
Engines
2 × Honeywell TFE731 (series)
Thrust
3,500 lbf each
Seats
Up to 10
Range
1,290 nm
Cruise
441 ktas
Ceiling
51,000 ft
Fuel capacity
607 US gal
ICAO type
LJ31
Exterior
White

THE AIRCRAFT’S LIFE

N125FS, from delivery to today.

Registration events from FAA records, compiled November 2025. Maintenance, damage and component history live in the logbooks, not the registry.

  1. Boyd Aviation & Aircraft Sales

    Previously listed owner in registration history.

    FAA registry
  2. H & P Aviation

    Re-registration recorded.

    FAA registry
  3. Private owner

    FAA registry
  4. Aircraft Trustee Services Inc Trustee

    Registration action listing trustee registrant (certificate issue 2022-09-07).

    FAA registry

FAA REGISTRATION

Registration details

Registration
N125FS
Status
Current as of November 2025
Certificate issued
Sep 7, 2022
Airworthiness date
Aug 19, 1996
Last FAA action
Sep 2, 2023
Registration expires
Sep 30, 2029
Mode S code (hex)
A066D3
Aircraft category
Fixed-wing multi-engine
Weight class
12,500 to 19,999lbs

From FAA registry data as of November 2025. Check the FAA registry for the current record.

OWNERSHIP

Registered owner

Aircraft Trustee Services Inc Trustee

Corporation · Dover, DE, US

RESEARCH NOTES

About N125FS

Compiled with AI assistance from the public sources listed below, November 2025. Not checked against the aircraft's logbooks.

Overview

This entry covers airframe N125FS, a production serial 125 Learjet 31A built in 1996 by Learjet Inc (Bombardier Aerospace). The aircraft is registered in the US and is recorded as owned by Aircraft Trustee Services Inc Trustee (a corporate trustee based in Dover, DE, US), a documented ownership arrangement that may reflect asset-management or custodial status rather than an individual operator. Historical registry notes include the transfer into the corporate trust; no prior owners are published in the supplied data.

Operations & Cabin

As registered, N125FS is a fixed-wing multi-engine business jet configured with 10 seats consistent with Learjet 31A cabin layouts; specifics of seating arrangement, galley or lavatory fit are not published in the supplied data. Typical mission profiles for this airframe, given its 1,290 nm range and 441 kt cruise, would center on short to mid-range executive transport and time-sensitive light cargo or patient transfer roles; actual usage depends on the trustee’s operator selection and any charter permissions. The twin Honeywell TFE731 engines rated at 3,500 lbf each support higher-altitude cruise up to the documented 51,000 ft ceiling, which drives maintenance considerations such as hot-section inspections and specialized pressurization system service intervals. The corporate trust ownership suggests centralized maintenance oversight and recordkeeping, although no specific maintenance status is provided.

Model & Market Context

The Learjet 31A occupies the light business jet niche, offering high cruise speeds and a high operating ceiling relative to many peers. Competing models in its class historically include other light-cabin jets that prioritize speed and climb performance; buyer and charter demand for such airframes depends heavily on life-limited component status and overall records.

MOVEMENTS

Last reported flights

DateFromTo
MMGL Miguel Hidalgo y Costilla International Airport MMAS Aguascalientes International Airport
MMAS Aguascalientes International Airport MMGL Miguel Hidalgo y Costilla International Airport

Public ADS-B and spotter reports up to November 2025. Not a live track.

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

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