Tail record, Gulfstream G150, United States register
Flown about as much as most G150s: inside the middle half of its type.
01
Busier than 55% of G150s, by flights a month.
Tracked flights
33
in the twelve months, about 3 a month
Busiest G150s
43rd
of 94 tracked, by flights a month
Estimated hours
≈53
in the twelve months, from time in the air
Flights a month, every tracked G150
02
N390KX flew more than the middle half of the fleet in 3 of 12 months. Its busiest month was September 2025, with 8 flights.
Its busiest month was September 2025, with 8 flights. It did not fly in August 2025. The record has 11 tracking gaps, so about one flight in 3 may be missing and every count is a minimum.
03
Each measure against all 94 tracked G150s. Every dot is one aircraft; the gold one is N390KX.
Chapter 4
Typical for its type
How hard has it been used?
Used at about the rate of most of the fleet, so its maintenance intervals have been used up at a normal pace.
Flights a monthLead measure. 55th percentile
4.4middle G150 4.1
Days flown a month60th percentile
3.7 dmiddle G150 3.2 d
Estimated hours a year69th percentile
≈111 hrmiddle G150 ≈84 hr
Harsher means harder on the aircraft than three quarters of G150s; typical is the middle half. Percentiles compare this aircraft with every tracked G150, over its record since 1 Jan 2025.
04
The fleet is shown, and whether N390KX sits inside its middle half. Its grades and values are in the full report.
Chapter 1
Hours per landing, middle G150: 1.5 : 1
Also graded: short hops. Leg length is shown as context.
N390KX sits outside the middle half, on one side or the other. Its grade and exact place are in the full report.
Unlock this chapterChapter 2
Salt air, middle G150: 1%
Also graded: damp air, freeze–thaw, near the coast and moisture in the air.
N390KX sits inside the middle half. Its grade and exact place are in the full report.
Unlock this chapterChapter 3
Short runways, middle G150: 13%
Also graded: hot, high takeoffs; density altitude; dust and dry climate.
N390KX sits inside the middle half. Its grade and exact place are in the full report.
Unlock this chapter05
All four chapters, every flight since January 2025 leg by leg, and the one thing to ask the seller.
Page one
Every chapter has this table, with a note on any assumption behind it.
days
Ask for
N390KX, Gulfstream G150
$395one aircraft
Weighing it against other G150s? Put it on a Spotlight board with up to four others. Included with Unlimited, $995 a month.
06
The Aircraft Ledger. “N390KX: how this Gulfstream G150 is flown.” Data through 31 Jul 2026. theaircraftledger.com/aircraft/n390kx
About 53 estimated hours in the 12 months to 31 Jul 2026, across 33 tracked flights. Hours are estimated from time in the air, so the logbook has the exact figure.
N390KX made 33 tracked flights in the 12 months to 31 Jul 2026, about 3 a month, and flew on about 5 days in each month it flew.
None of its 33 tracked flights in the 12 months to 31 Jul 2026 crossed a border.
It was last tracked in July 2026. We publish an aircraft’s flights seven days after they happen, and show them by month only.
We leave out airports, bases and exact dates on purpose. We show how an aircraft has been used, not where it goes.
All four graded chapters (Fatigue, Corrosion, Engines and brakes, and Utilization), each against the tracked G150s, plus the operational summary and operating rhythm, as a PDF, CSV and share link. It costs $395, or $995 a month for unlimited reports and Spotlight.
Method: flight data, every count a minimum. Estimated hours from time in the air. About our data
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Not a substitute for a pre-purchase inspection or records review. TailCheck shows how an aircraft has been used, not its condition.