Buying a used Gulfstream GIV/G450: price, checks and questions for the seller
Fractional aircraft were the smallest group in the North American GIV/G450 fleet and the busiest. In the twelve months to 31 Jul 2026, fractional aircraft (8%) logged a median of 595 estimated hours a year, charter aircraft (47%) 247 hours and private aircraft (45%) 124 hours. Comparing Gulfstream G450 prices means setting each candidate beside its own group. Condition comes from a pre-purchase inspection. Tracking shows how that condition came about, landing by landing.
Four checks follow, one for each TailCheck chapter: Fatigue, Corrosion, Engines and brakes, and Utilization. Each gives what normal looked like on its lead measure and the far end, where 1 in 20 aircraft asked most of the airframe.
What has each flight cost the structure?
The median aircraft flew 1.9 hours per landing, the highest in its size group, ahead of the Bombardier Challenger 300/350, Bombardier Challenger 600 series, Dassault Falcon 2000 and Dassault Falcon 900. Still, 1 in 20 flew fewer than 1.2 hours per landing, the most cycles for their hours.
Hours per landing, short hops and leg length.
Every landing is a pressurization cycle for the fuselage. A GIV/G450 flown on short legs builds cycles faster than its hours suggest, and cycles count against structural and landing-gear life limits.
Each aircraft’s average flight hours per landing
The 25th to the 75th percentile: typical.
The 5% that ask most of the aircraft
All 495 active GIVs in North America, 1 Aug 2025 – 31 Jul 2026.
The rest of the check
Same aircraft and window| Measure | Fleet median | Middle half | Harder end |
|---|---|---|---|
| Short hops Share of legs under 300 nm | 33% | 26–40% | 5% at 57% or more |
| Leg length Median leg | 560 nm | 446–719 nm | Highest 5%: 984 nm or more |
Fewer than 1.2 hours per landing: the 1 in 20 aircraft that landed most often for their hours.
Short hops, legs under 300 nm, on more than 57% of its legs: the 1 in 20 aircraft with the most.
A logbook landing count that doesn't square with its hours when set against the fleet median above.
How many landings has it logged against its hours, and how does that ratio sit beside the fleet median in the Fatigue check?
Which structural and landing-gear limits count landings, and how many landings remain on each?
What air has it lived in?
The median aircraft spent 2% of its nights in salt air, within 2 km of the coast. At the coastal end, 1 in 20 spent more than 22%, and those aircraft need the closest corrosion inspection.
Salt, damp and freeze–thaw where it spends its nights.
Salt, damp and freeze–thaw nights, when the field froze and thawed within the day, drive corrosion. Where an aircraft spends its nights matters as much as where it flies. A coastal home field doesn't rule an aircraft out, but it puts corrosion first on the inspection list.
Nights within 2 km of the coast
The 25th to the 75th percentile: typical.
The 5% that ask most of the aircraft
388 GIVs in North America we can place on enough nights at known fields, 1 Aug 2025 – 31 Jul 2026; 15 on their record since 1 Jan 2025, with too few in the twelve months.
The rest of the check
Same aircraft and window| Measure | Fleet median | Middle half | Harder end |
|---|---|---|---|
| Near the coast Nights within 10 km of the coast | 32% | 7–58% | 5% at 93% or more |
| Damp air Hours a day at 80% humidity or more, above freezing | 7.4 h | 6.4–8.6 h | 5% at 11.0 h or more |
| Freeze–thaw Nights that froze and thawed within the day | 7% | 2–13% | 5% at 27% or more |
| Moisture in the air Average absolute humidity overnight | 9.5 g/m³ | 8.4–10.9 g/m³ | 5% at 14.6 g/m³ or more |
Salt air on more than 22% of its nights, the coastal 1 in 20, with no record of hangar storage.
Freeze–thaw on more than 27% of its nights and no recent check of drains, seals and sealant.
Most nights at a coastal field and no corrosion inspection anywhere in the records.
Where has it been based, and was it kept in a hangar there?
When was the last corrosion inspection done, and what did it find?
What did its departures ask of the engines and brakes?
The median aircraft took off from a short runway on 39% of its departures, and the middle half on between 27% and 52%. At the far end, 1 in 20 did so on more than 74%.
Runway length, heat and height at takeoff.
A short runway here is a field whose longest runway is under 1.25 times the published takeoff distance. Departures there need more takeoff thrust; landings there wear brakes and tires. Hot, high takeoffs, at 5,000 ft density altitude or more, work the engines harder.
Departures where the longest runway was under 1.25× the takeoff distance
The 25th to the 75th percentile: typical.
The 5% that ask most of the aircraft
494 GIVs in North America with enough departures we could assess, 1 Aug 2025 – 31 Jul 2026; 6 on their record since 1 Jan 2025, with too few in the twelve months.
The rest of the check
Same aircraft and window| Measure | Fleet median | Middle half | Harder end |
|---|---|---|---|
| Hot, high takeoffs Departures at 5,000 ft density altitude or more | 5% | 2–8% | 5% at 20% or more |
| Density altitude Typical density altitude at takeoff | 1,391 ft | 1,148–1,736 ft | 5% at 2,457 ft or more |
Short-runway departures on more than 74% of takeoffs, a share only 1 in 20 aircraft passed, with no brake and tire records to match.
Hot, high takeoffs on more than 20% of departures, a share only 1 in 20 aircraft passed, with no engine trend data to match.
Are the Rolls-Royce Tay engines on an hourly maintenance program, and does the program transfer to a new owner?
Is there engine trend data, and do brake and tire changes line up with the short fields in the tracked record?
How hard has it been flown?
Compare a candidate with its own group. Fractional aircraft flew medians of 595 estimated hours a year and 26 flights a month. Charter medians were 247 hours and 10 flights; for private aircraft, 124 hours and 6 flights.
Estimated hours, flights and flying days: how much of its life it has used.
Utilization is the quickest read on how much life an aircraft has used. Compare the tracked flying with the logbook hours, month by month.
From time in the air
The 25th to the 75th percentile: typical.
The 5% that ask most of the aircraft
392 GIVs in North America with at least 40% of their flights tracked, 1 Aug 2025 – 31 Jul 2026.
The rest of the check
Same aircraft and window| Measure | Fleet median | Middle half | Harder end |
|---|---|---|---|
| Flights a month In the months it flew | 8.5 | 4.9–14.7 | 5% at 26.3 or more |
| Days flown a month Days with at least one flight | 5.8 | 3.6–9.7 | 5% at 15.1 or more |
More than 658 estimated hours a year, a pace only 1 in 20 aircraft passed, presented as normal use.
Logbook hours well below what tracking shows. Tracking misses some flights and its hours are estimates, so a small gap means little; a large one needs an explanation.
Do the logbook hours match the tracked flying for each month of the past year?
Has it flown charter, in a fractional program or under management, and for how long?
What affects the price of a used GIV
Six factors weigh on the purchase of a used GIV/G450. Each follows with the fleet's figures, and with the TailCheck chapter that grades it where there is one.
| What moves the price | Across the GIV fleet | TailCheck chapter |
|---|---|---|
| Age | Build year says little about wear. Calendar inspections come due with the months; check them in the records. Tracked aircraft with a known build year date from 1987 to 2019. Medians by build-year band ran from 173 to 248 estimated hours a year, with no steady trend. | Fatigue |
| Hours | Hours-based inspections and engine overhauls come due sooner on an aircraft that flies more. The median aircraft flew 189 estimated hours a year, the middle half between 120 and 358 hours. Set a candidate beside its group's median in Utilization. | Utilization |
| Landings | Check the logged landings beside the hours. An aircraft with few hours per landing has used more of its structural and landing-gear life limits for its time in the air. The fleet median was 1.9 hours per landing; the middle half ran from 1.7 to 2.2. TailCheck grades it under Fatigue. | Fatigue |
| Charter history | Charter flying adds hours and landings quickly. About half the fleet, 235 of 495 aircraft, is on our charter list. Ask how long a candidate flew charter, and judge its record against its group's median in Utilization. | Utilization |
| How hard it has been flown | Engine trend data and brake and tire records show the wear demanding fields leave. The median aircraft took off from short runways on 39% of its departures and from hot, high fields on 5%. TailCheck grades both under Engines and brakes. | Engines and brakes |
| Base and corrosion exposure | Salt air and damp at the fields where an aircraft spends its nights drive corrosion, which takes time to find and repair. A quarter of the aircraft spent 7% or more of their nights within 2 km of the coast. TailCheck grades it under Corrosion. | Corrosion |
Asking prices vary by aircraft, and the tail’s history explains much of the difference. Check a tail →
Where TailCheck fits in a GIV purchase
The usage checks are cheapest to act on before anything is signed, while walking away still costs nothing. Later, the same report points the records reviewer and the inspection shop to where they should look hardest.
| # | Step | Where TailCheck helps |
|---|---|---|
| 01 | Shortlist Screen candidates on how they have been used before spending on anything else. | Free record for each tail, then TailCheck on the shortlist |
| 02 | Letter of intent Price and terms, subject to inspection and a records review. | — |
| 03 | Records review Logbooks, maintenance programs and damage history. | Hours, landings and long gaps to check the logbooks against |
| 04 | Pre-purchase inspection At a shop that knows the type. | Brief the shop on what the usage data flagged |
| 05 | Discrepancies and price Negotiate on what the inspection and records found. | Grades against the type support the conversation |
| 06 | Closing and delivery Title, escrow, registration and acceptance flight. | — |
What each part of the purchase answers
Usage is one leg of a purchase; paperwork and condition are the others| Item | Why it matters on a GIV | Who answers it |
|---|---|---|
| Usage history | Hours, landings, bases and gaps, against the 495 North American GIVs. | TailCheck |
| Logbooks | Complete, back-to-birth records, and whether they square with the tracked flying. | Records review |
| Damage history | Any structural repair, how it was signed off, and whether it was disclosed. | Records review |
| Inspections due | When the next major inspections fall due, by hours, landings and calendar. | Records review |
| Engine program | Whether the Rolls-Royce Tay 611-8 or Rolls-Royce Tay 611-8C engines are enrolled on an hourly maintenance program, and whether it transfers.Engines: EASA TCDS EASA.IM.A.070 Issue 13, p.34 | Records review |
| Physical condition | Corrosion, structure, systems and interior: what the usage data says to look at hardest. | Pre-purchase inspection |
| Title and registry | Liens, the ownership chain and any export or import between registries. | Title search |
What tracking can and can’t tell you
Tracking caught enough of the flying to grade utilization on 392 of the 495 active aircraft. Tracking misses some flights and can't see condition. Use it beside the inspection and the records review.
| What it can show | What it can’t establish |
|---|---|
| What it has flown, and where | Its mechanical condition, maintenance quality or airworthiness |
| How hard it is used against other GIVs | Its exact hours and landings, or flights we didn’t see |
| Long stays on the ground, and gaps in the track | What work was done at any shop, or why it sat anywhere |
| Where it spends its nights, and the weather there | Whether it was hangared or parked outside |
| What its departures asked: runway length, heat and height | Its takeoff weight, or which runway it used |
Ben
Ben founded The Aircraft Ledger to show buyers how an aircraft has really been flown. Before that, he spent five years researching what more than 140 private jet models cost to buy and run, for clients mostly in the US.
Down to two GIVs?
Check both tails before you choose.
Enter the two tails on your shortlist. TailCheck grades each one on Fatigue, Corrosion, Engines and brakes, and Utilization against the GIV fleet, then puts them side by side.
Buying a used GIV: questions
How many hours a year is normal for a GIV?
The median North American GIV/G450 flew 189 estimated hours a year, and the middle half of the fleet flew between 120 and 358 hours. At the busy end, 1 in 20 flew more than 658 hours. Fractional, charter and private aircraft each have their own median in the Utilization check. Compare a candidate with its own group's figure.
Is a high-hour GIV a bad buy?
No. High hours alone don't make a bad buy. Long legs spread hours over fewer landings, and landings count against structural and landing-gear life limits. Check a candidate's hours and landings together. Then set its hours per landing against the fleet median in the Fatigue check.
Does a TailCheck report replace a pre-purchase inspection?
No, it works alongside one. A TailCheck report shows how the aircraft was flown and where it spent its nights. A pre-purchase inspection shows its condition today. The report tells the inspection team where to look hardest.
Can tracking show whether a GIV was hangared?
No. What tracking shows is where the aircraft spent its nights and the weather at those fields. Whether it sat inside a hangar is a question for the seller and the records.
When should I run these checks?
Before a letter of intent. At that stage a buyer can walk away at no cost. Then pass the report to the records reviewer and the inspection shop.
Does this guide cover every model, from the GIV to the G450?
Yes. The benchmarks cover the GIV, GIV-SP, G300, G400, G350 and G450 together. All six sit on one type certificate (G-IV: EASA TCDS EASA.IM.A.070 Issue 13, p.34; GIV-X: EASA TCDS EASA.IM.A.070 Issue 13, p.43). The registry records we use couldn't place any aircraft by variant, so the figures can't be split by model.
Cite this data
The Aircraft Ledger. “Buying a used Gulfstream GIV/G450.” Data to 29 August 2026. theaircraftledger.com/guides/gulfstream-giv
Method: benchmarks are North American GIVs with at least 20 tracked flights in the latest twelve full months, ADS-B tracking 1 Aug 2025 – 31 Jul 2026; each figure is the fleet median with its middle half (25th–75th percentile) and the 5% at the harder end. Estimated hours from time in the air; tracking misses some flights, so counts and hours are minimums. We assume the longest runway at each field, so short-runway figures are conservative. Engines from the type certificate data sheet, cited. This guide is general information, not an inspection, appraisal or records review. About our data