Tail record, Gulfstream G100, United States register
A busy G100: flown more than three quarters of its type.
01
Busier than 77% of G100s, by flights a month.
Tracked flights
59
in the twelve months, about 5 a month
Busiest G100s
17th
of 70 tracked, by flights a month
Estimated hours
≈88
in the twelve months, from time in the air
Flights a month, every tracked G100
02
N400GS flew more than the middle half of the fleet in 3 of 12 months. Its busiest month was July 2026, with 19 flights.
Its busiest month was July 2026, with 19 flights. It did not fly in December 2025. The record has 31 tracking gaps, so about one flight in 2 may be missing and every count is a minimum.
03
Each measure against all 70 tracked G100s. Every dot is one aircraft; the gold one is N400GS.
Chapter 4
Harsher than its type
How hard has it been used?
Heavy use means more of its maintenance intervals have been used up. Worth checking where it sits in its inspection cycle before a pre-buy.
Flights a monthLead measure. 77th percentile
6.8middle G100 4.4
Days flown a month72nd percentile
4.1 dmiddle G100 3.1 d
Estimated hours a year74th percentile
≈131 hrmiddle G100 ≈74 hr
Harsher means harder on the aircraft than three quarters of G100s; typical is the middle half. Percentiles compare this aircraft with every tracked G100, over its record since 1 Jan 2025.
04
The fleet is shown, and whether N400GS sits inside its middle half. Its grades and values are in the full report.
Chapter 1
Hours per landing, middle G100: 1.5 : 1
Also graded: short hops. Leg length is shown as context.
N400GS sits inside the middle half. Its grade and exact place are in the full report.
Unlock this chapterChapter 2
Also graded: damp air, freeze–thaw, near the coast and moisture in the air.
Not graded: not enough data.
Unlock this chapterChapter 3
Short runways, middle G100: 37%
Also graded: hot, high takeoffs; density altitude; dust and dry climate.
N400GS sits outside the middle half, on one side or the other. 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
N400GS, Gulfstream G100
$395one aircraft
Weighing it against other G100s? Put it on a Spotlight board with up to four others. Included with Unlimited, $995 a month.
06
The Aircraft Ledger. “N400GS: how this Gulfstream G100 is flown.” Data through 31 Jul 2026. theaircraftledger.com/aircraft/n400gs
About 88 estimated hours in the 12 months to 31 Jul 2026, across 59 tracked flights. Hours are estimated from time in the air, so the logbook has the exact figure.
N400GS made 59 tracked flights in the 12 months to 31 Jul 2026, about 5 a month, and flew on about 4 days in each month it flew.
33 of its 59 tracked flights in the 12 months to 31 Jul 2026, 56%, 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 G100s, 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
Owners and operators can ask us not to publish an aircraft. Data policy and opt-out
Not a substitute for a pre-purchase inspection or records review. TailCheck shows how an aircraft has been used, not its condition.