N400AJ 1990 Gulfstream IV (certified family)
- 1990Built
INSIDE
The Gulfstream IV twelve-seat cabin.
Illustrations of a representative Gulfstream IV twelve-seat cabin, not N400AJ’s. Every aircraft’s completion differs. Common G-IV exterior reference. This does not establish an SP conversion, installed engine, avionics or cabin completion. Cabin illustrates one documented twelve-seat example, not the installed completion of this aircraft. Explore the Gulfstream IV (certified family) interior and layout. Gulfstream IV (certified family) interior: cabin size and seat map.
ROUGH RANGE
What N400AJ might be worth, and where it’s heading.
A rough range: Radar's value model doesn't cover the Gulfstream IV (certified family) on its own yet. From Radar's listing-based estimates for business jets of similar engine thrust and age. The Gulfstream G450 curve gives the shape of the forecast, and the range is widened to match. Not an appraisal.
Gulfstream IV (certified family) price by build year, and the for-sale market
SPECIFICATIONS
Gulfstream IV (certified family) specs
Published figures for the type, from public sources. A given aircraft varies with its completion, weight and mods.
Full Gulfstream IV (certified family) specs, range and cabin
- Model
- Gulfstream IV (certified family)
- Year
- 1990
- Serial number
- 1129
- Engines
- 2 × Rolls-Royce Tay 611-8 (TAY 611SER)
- Thrust
- 13,850 lbf each
- ICAO type
- GLF4
THE AIRCRAFT’S LIFE
N400AJ, 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: N400AJ was assigned to another aircraft, a Beech 200. That registration was cancelled on this date.
FAA registry -
Registry record
Airworthiness date on the current FAA record (standard category).
FAA registry -
Milberg Falcon Express LLC
Certificate of registration issued as N400AJ.
FAA registry
FAA REGISTRATION
Registration details
- Registration
- N400AJ
- Status
- Current as of October 2026
- Certificate issued
- Aug 4, 2023
- Airworthiness date
- Feb 24, 2002
- Last FAA action
- Aug 4, 2023
- Registration expires
- Aug 31, 2030
- Mode S code (hex)
- A4ACAA
- 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
Milberg Falcon Express LLC
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 N400AJ’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 N400AJ? 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.
N400AJ 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.