The Gulfstream IV class of aircraft includes the Gulfstream IV, Gulfstream IVSP, Gulfstream 450 and G400.  This class of aircraft was the predecessor to the GV and G550. There are a significant amount of Gulfstream IVSP for sale and it is really a buyers market as more buyers migrate up to the newer Gulfstream aircraft.
The GIV was the successor to the GIII and was a significant step up in capability. The Gulfstream IV was the first business jet to have an entirely glass cockpit. It initially came with an electronic breaking system that was replaced by a hydraulic one in the GIVSP after some issues.  The aircraft are known for their toughness and have a very loyal following of both owners and pilots.
The GIV/G450 is replaced by the G500Â and the final G450 was delivered in January of 2018.
Aircraft Information is only available to premium subscribers:
If you are not a Member You May Join Here
If you are not a Member You May Join Here
Here is a sample Aircraft For Sale Page Lear 60XR For Sale to show you the information to demonstrate the kind of information a Premium Member Would See.
We operate a freemium business model. Some data is accessible to all other information requires registration and membership. Detailed Aircraft information is only available to premium subscribers.