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N400AJ1990 GULFSTREAM AEROSPACE G-IV

N400AJ is a 1990 Gulfstream Aerospace G-IV, serial 1129, registered to MILBERG FALCON EXPRESS LLC, an llc in Knoxville, TN, US. The FAA issued the current certificate on 4 Aug 2023, and its status is Valid registration, expiring 31 Aug 2030. The record shows no registry changes, no NTSB case on this mark and 1 service difficulty report.

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N400AJ, 1990 GULFSTREAM AEROSPACE G-IV
$2,160,899
Valued 29 Aug 2026
Registration
N400AJ
Aircraft
G-IV
GULFSTREAM AEROSPACE
Serial Number
1129
Locked
Total Hours
Locked
Total Cycles
1990
Year
Public record

The public record
for N400AJ.

This section is public record, drawn from the FAA registry and the Virtual Hangar valuation sheet. Nothing here comes from the aircraft's own logbooks. Verification is what connects this record to the logbooks, the maintenance plan and the value factors only an owner holds, and anything an owner chooses to publish appears separately below.

Registration record

N400AJ as the FAA holds it

FAA registry, effective 6 Oct 2026

Airframe

Manufacturer
GULFSTREAM AEROSPACE
Model
G-IV
Serial number
1129
Year manufactured
1990
Airframe type
Fixed wing multi engine
Category
Land
Certification basis
Type certificated
Seats
22
Weight class
20,000 lb and over

Powerplant

Engines
2
Manufacturer
ROLLS-ROYC
Model
TAY 611SER
Type
Turbo-fan
Thrust
12,450 lbf each

Airworthiness

Certificate issued
24 Feb 2002
Classification
Standard
Approved operations
Transport

Registration

Status
Valid registration
Record type
Currently registered
Certificate issued
4 Aug 2023
Last FAA action
4 Aug 2023
Expires
31 Aug 2030
FAA region
Central
Fractional ownership
No
FAA unique id
00283957

Registered owner

Name
MILBERG FALCON EXPRESS LLC
Registrant type
LLC
Based
KNOXVILLE, TN, US

Transponder address

Mode S (hex)
A4ACAA
ICAO 24-bit
a4acaa
Octal
51126252
Decimal
10792106

Estimated value

$2,160,899

As of 29 Aug 2026. Virtual Hangar Jetstimate. Market value and charter on virtualhangar.com

Market presence

Not currently listed

1 listing tracked since collection began. Last asking price seen: $3,240,000 asked on 25 Sep 2026.

Live tracking

Where N400AJ is,
right now.

Flight tracking read live from a public feed. In the air, the map shows the aircraft's position, heading and path flown. On the ground, it shows where the feed last reported it, rounded to about a kilometre.

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Straight answers

Questions about
N400AJ.

Each answer is drawn from public record and the Virtual Hangar valuation sheet: the FAA registry, the NTSB database, service difficulty reports, Part 135 certificates and public sale listings. Nothing here comes from the owner's own published details above. Where the record is silent the question is not asked, so an absence here never stands in for a clean history.

What kind of aircraft is N400AJ?

N400AJ is a 1990 Gulfstream Aerospace G-IV, serial 1129. The FAA classes it as fixed wing multi engine, it seats 22, it is powered by 2 ROLLS-ROYC TAY 611SER engines.

Who is N400AJ registered to?

The FAA registry lists MILBERG FALCON EXPRESS LLC, an llc in Knoxville, TN, US, as the registrant of N400AJ.

Is N400AJ still registered?

The FAA lists the registration as Valid registration. The current certificate was issued on 4 Aug 2023 and expires on 31 Aug 2030.

Has N400AJ been in an NTSB-reported accident?

The NTSB database holds no accident or incident record naming N400AJ. Marks are reused, so this covers the mark, not every airframe that ever wore it.

Does N400AJ have service difficulty reports?

1 service difficulty report have been filed against N400AJ with the FAA.

Who operates N400AJ for charter?

No Part 135 certificate lists N400AJ, so it is not on file as a charter aircraft.

Is N400AJ for sale?

N400AJ is not currently listed for sale on the marketplaces we collect. 1 earlier listing tracked.

What is N400AJ worth?

The Virtual Hangar Jetstimate puts N400AJ at $2,160,899 as of 29 Aug 2026. A listing asking price, where one exists, is the seller's number and not this valuation.

Has N400AJ changed hands?

The FAA record shows no registry changes for N400AJ. The mark was previously carried by: Beech 200; American Jet Industries Inc Hustler 400.

What verification adds

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