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Illustration of a Bombardier Challenger 604. Not a photo of N851GK.
Illustration of the Bombardier Challenger 604, not a photo of N851GK.

N851GK 2006 Bombardier Challenger 604

Serial number 5643. Registered to KKH Rentals Inc, San Antonio, TX, US.

  • 2006Built
Bombardier Challenger 604: specs, US fleet and every tail number

INSIDE

The Bombardier Challenger 604 cabin.

Illustrations of a representative Bombardier Challenger 604 cabin, not N851GK’s. Every aircraft’s completion differs. Walk through the cabin in 3D. Explore the Bombardier Challenger 604 interior and layout. Bombardier Challenger 604 interior: cabin size and seat map.

Warm natural light fills a wide stand-up Challenger 604 cabin with cream leather club chairs, an aft three-place divan, wood veneer trim and upright rounded windows, viewed aft down the aisle.
A representative Bombardier Challenger 604 cabin.
Top-down view of a Bombardier Challenger 604 cabin. Typical 9-passenger layout: a club of four, two club seats opposite a three-place divan, forward galley, aft lavatory.
Typical 9-passenger layout: a club of four, two club seats opposite a three-place divan, forward galley, aft lavatory.

ROUGH RANGE

What N851GK might be worth, and where it’s heading.

A rough range: Radar's value model doesn't cover the Bombardier Challenger 604 on its own yet. From Radar's listing-based estimates for business jets of similar engine thrust and age, set to the level of the 11 Bombardier Challenger 604 estimates on Radar. The Gulfstream G450 curve gives the shape of the forecast, and the range is widened to match. Not an appraisal.

N851GK · On program · rough range

$9.9M

$7.3M$13.4M
In 2031
$6.8M
Value kept
69%
Per year
−7.2%
Program effect
$658.4K
Confidence
Low

5-year projection

The Gulfstream G450 curve, scaled to a rough range for this Bombardier Challenger 604

$4.9M$7.4M$9.9M$12.4MNow20272028202920302031On program $6.8MOff program $6M
Engine program
Horizon
Open the aircraft value tool

SPECIFICATIONS

Bombardier Challenger 604 specs

Published figures for the type, from public sources. A given aircraft varies with its completion, weight and mods.

Full Bombardier Challenger 604 specs, range and cabin

Model
Bombardier Challenger 604
Year
2006
Serial number
5643
Engines
2 × General Electric CF34-3B
ICAO type
CL60

THE AIRCRAFT’S LIFE

N851GK on the registry.

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

  1. Registry record

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

    FAA registry
  2. KKH Rentals Inc

    Certificate of registration issued as N851GK.

    FAA registry

FAA REGISTRATION

Registration details

Registration
N851GK
Status
Current as of October 2026
Certificate issued
Aug 10, 2021
Airworthiness date
Jan 31, 2006
Last FAA action
Jun 3, 2023
Registration expires
Aug 31, 2028
Mode S code (hex)
ABABAF
Aircraft category
Large-cabin 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

KKH Rentals Inc

Corporation · San Antonio, TX, US

RESEARCH NOTES

About N851GK

Compiled with AI assistance from the public sources listed below, October 2026. Not checked against the aircraft's logbooks.

Overview

N851GK is a Bombardier Challenger 604 built in 2006 with serial number 5643. The FAA record names KKH Rentals Inc as the registrant. The ICAO type designator is CL60. The registration identifies this airframe; specifications below describe the published aircraft type.

The type

The aircraft is classified as a large-cabin jet. The type uses 2 General Electric CF34-3B engines. These type figures do not establish the equipment installed on this aircraft.

Registry facts

The FAA lists the make as BOMBARDIER INC and the model as CL-600-2B16. The certificate of registration was issued on August 10, 2021. The current record gives an airworthiness date of January 31, 2006. The type certificate reference is FAA TCDS A21EA (Bombardier CL-600-2B16).

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