N4500X 2020 Gulfstream G600
- 2020Built
- 19Seats
- 51,000 ftCeiling
INSIDE
The Gulfstream G600 cabin.
Illustrations of a representative Gulfstream G600 cabin, not N4500X’s. Every aircraft’s completion differs. Walk through the cabin in 3D. Explore the Gulfstream G600 interior and layout. Gulfstream G600 interior: cabin size and seat map.
RADAR ESTIMATE
What N4500X is worth, and where it’s heading.
Radar's aircraft value model for a 2020 Gulfstream G600, starting from typical time. Move the hours, the engine program and the horizon to see what each is worth. An estimate, not an appraisal: the logbooks, damage history and programs on N4500X move the number.
2020 G600 · 2,300 hrs · On program
$46.8M
- In 2031
- $30.4M
- Value kept
- 65%
- Per year
- −8.2%
- Program effect
- $3.2M
- Confidence
- Medium
5-year projection
As of today, on and off an engine program, at 380 hrs a year
Gulfstream G600 price by build year, and the for-sale market
RECENT SALES
What G600s have sold for.
Source-reported sale prices for the type, the same market evidence the Radar value model calibrates on. Each sale is a different aircraft with its own hours, programs and records.
- 2020 G600 Sold Jun 4, 2026 $42.1M
- 2020 G600 Sold Apr 15, 2026 $48M
- 2022 G600 Sold Feb 19, 2026 · on program $55.5M
SPECIFICATIONS
Gulfstream G600 specs
Published figures for the type, from public sources. A given aircraft varies with its completion, weight and mods.
- Model
- Gulfstream G600
- Year
- 2020
- Serial number
- 73036
- Engines
- 2 × Pratt & Whitney Canada PW815GA
- Seats
- Up to 19
- Published Mach
- 0.925
- Ceiling
- 51,000 ft
THE AIRCRAFT’S LIFE
N4500X, from delivery to today.
Registration events from FAA records, compiled October 2026. Maintenance, damage and component history live in the logbooks, not the registry.
-
Registry record
Earlier use of the number: N4500X was assigned to another aircraft, a Cessna 177. That registration was cancelled on this date.
FAA registry -
Registry record
Airworthiness date on the current FAA record (standard category).
FAA registry -
Grey Six LLC
Certificate of registration issued as N4500X.
FAA registry
FAA REGISTRATION
Registration details
- Registration
- N4500X
- Status
- Current as of October 2026
- Certificate issued
- Jan 13, 2021
- Airworthiness date
- Jun 23, 2020
- Last FAA action
- Apr 14, 2023
- Registration expires
- Jan 31, 2028
- Mode S code (hex)
- A5748A
- Aircraft category
- Ultra-long-range jet
- Weight class
- Over 20,000lbs
From FAA registry data as of October 2026. Check the FAA registry for the current record.
OWNERSHIP
Registered owner
Grey Six LLC
RESEARCH NOTES
About N4500X
Compiled with AI assistance from the public sources listed below, October 2026. Not checked against the aircraft's logbooks.
Aircraft identity
N4500X is a 2020 Gulfstream G600, serial number 73036. The FAA registration names Grey Six LLC as the registrant. The registrant’s entity type is recorded as LLC. The supplied aircraft category is ultra-long-range jet.
Registration record
The certificate of registration was issued on January 13, 2021. The FAA record lists an airworthiness date of June 23, 2020. A different aircraft, a Cessna 177, previously used N4500X; that registration was cancelled on June 16, 1993. The FAA fractional-ownership field is not marked for this registration.
The type
The FAA identifies the manufacturer as GULFSTREAM AEROSPACE CORP and the model as GVII-G600. The supplied type-certificate reference is EASA IM.A.595 / FAA T00021AT. Published type specifications list a maximum passenger capacity of 19 and a ceiling of 51000 feet. The type’s engine specification is 2 Pratt & Whitney Canada PW815GA engines. The published Mach figure is 0.925. These are type-level reference figures, not confirmation of this aircraft’s installed engine configuration, cabin seating or individual operating performance.
SOURCES
Where this page comes from
Built from FAA registry records, manufacturer specifications, and public flight-tracking and market data, compiled October 2026. 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
- ADs that may apply to this aircraft →FAA airworthiness directives that name N4500X’s make and model
- N-number lookupLook up any other US aircraft by its registration
- 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 N4500X? 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.
N4500X is not a Radar customer record. This page is built from public sources as of October 2026. Owners and operators can ask for a correction or removal.