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Illustration of a Gulfstream G600. Not a photo of N623MM.
Illustration of the Gulfstream G600, not a photo of N623MM.

N623MM 2025 Gulfstream G600

Serial number 73174. Registered to Bank of Utah Trustee, Salt Lake City, UT, US.

  • 2025Built
  • 19Seats
  • 51,000 ftCeiling
Gulfstream G600: specs, US fleet and every tail number

INSIDE

The Gulfstream G600 cabin.

Illustrations of a representative Gulfstream G600 cabin, not N623MM’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.

An eye-level view looking aft through a Gulfstream G600's spacious stand-up cabin shows cream leather club and conference seating, an aft divan, wood veneer cabinetry, and warm natural light through panoramic oval windows.
A representative Gulfstream G600 cabin.
Top-down view of a Gulfstream G600 cabin. Typical 13-passenger layout: four club seats, four conference seats, two club seats opposite a three-place divan, forward galley, aft lavatory.
Typical 13-passenger layout: four club seats, four conference seats, two club seats opposite a three-place divan, forward galley, aft lavatory.

RADAR ESTIMATE

What N623MM is worth, and where it’s heading.

Radar's aircraft value model for a 2025 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 N623MM move the number.

2025 G600 · 400 hrs · On program

$59.4M

$54.4M$64.3M
In 2031
$36.4M
Value kept
61%
Per year
−9.3%
Program effect
$4.1M
Confidence
Medium

5-year projection

As of today, on and off an engine program, at 380 hrs a year

$32.7M$42.1M$51.5M$60.9MNow20272028202920302031On program $36.4MOff program $33.3M
Engine program
Horizon
Value N623MM in the full tool

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.

Reported sale N623MM, Radar Estimate
  1. 2020 G600 Sold Jun 4, 2026 $42.1M
  2. 2020 G600 Sold Apr 15, 2026 $48M
  3. 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.

Full Gulfstream G600 specs, range and cabin

Model
Gulfstream G600
Year
2025
Serial number
73174
Engines
2 × Pratt & Whitney Canada PW815GA
Seats
Up to 19
Published Mach
0.925
Ceiling
51,000 ft

THE AIRCRAFT’S LIFE

N623MM, from delivery to today.

Registration events from FAA records, compiled October 2026. Maintenance, damage and component history live in the logbooks, not the registry.

  1. Registry record

    Earlier use of the number: N623MM was assigned to another aircraft, a 1968 Beech 65. That registration was cancelled on this date.

    FAA registry
  2. Registry record

    Airworthiness date on the current FAA record (standard category).

    FAA registry
  3. Bank of Utah Trustee

    Certificate of registration issued as N623MM.

    FAA registry

FAA REGISTRATION

Registration details

Registration
N623MM
Status
Current as of October 2026
Certificate issued
Jun 6, 2025
Airworthiness date
Jan 31, 2025
Last FAA action
Jun 6, 2025
Registration expires
Jun 30, 2032
Mode S code (hex)
A82281
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

Bank of Utah Trustee

Corporation · Salt Lake City, UT, US

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