Not sure if this is her personal plane, but I pulled it off of a picture.
flightaware.com/live/flight/N7601
It does make a few stops at KPQL (Lousiana) where she is from.
That tinyurl redirects to landings.com, which hangs for me. However, the aircraft owner is displayed on FlightAware pages. āUNION OIL COMPANY CALIFORNIA (EL SEGUNDO CA)ā in this case. You can hover over the name for the address.
I pulled it off of a group of photos online I canāt seem to link to again. Iām getting tired of trying to distinguish what is going to bring me to smut and what is going to bring me to where I want to be.
I guess youāre just going to have to take my word on it!!!
Itās not that hard to fomd aircraft pictures on the Internet.
Do a Google search using the registration. If you click on the results that show an address of jetphotos.net or airliners.net then you have a non-smut picture.
Better yet, go directly to airliners.net or jetphotos.net and enter your search terms.
Jetphotos.net has its search engine on its home page. However, they also have very annoying multiple pop-under ads.
You need to click on the ātake me to the photo search pageā button to get to the search engine on airliners.net but the plus is they donāt have the stupid pop-under ads.
A picture of N7601 on jetphotos.net is at jetphotos.net/viewphoto.php?id=549380
On airliners.net, N7601 is shown at airliners.net/open.file/614293/M/
(I was actually referring to the pic of Britney boarding the jet).
Just as easy to find:
Once I found out the Federline was Spears, I entered ābritney spearsā and ājetā into google image search and found the picture.
You can see the āfascinatingā picture at tinyurl.com/cqzgr
Now, the bigger question is: Why would anybody with an iq of more than 8 or is older than 3 really give a damn about Britney Spears boarding an airplane, who she marries, or anything else? 
Well, itās possible, with a little research, that Union Oil Co. has their jet on someoneās charter certificate.
It doesnāt appear to be on anyoneās charter certificate:
From the FAA Registry
N-Number Inquiry Results
N7601 is Assigned
Assigned/Registered Aircraft
Aircraft Description
Serial Number 1245
Type Registration Corporation
Manufacturer Name
GULFSTREAM AEROSPACE
Certificate Issue Date 12/30/1997
Model G-IV
Status Valid
Type Aircraft Fixed Wing Multi-Engine
Type Engine Turbo-Jet
Pending Number Change None
Dealer No
Date Change Authorized None
Mode S Code 52442003
MFR Year 1994
Fractional Owner NO
Registered Owner
Name UNION OIL COMPANY CALIFORNIA
Street 2141 ROSECRANS AVE STE 4000
City EL SEGUNDO State CALIFORNIA Zip Code 90245-4746
County LOS ANGELES
Country UNITED STATES
Airworthiness
Engine Manufacturer ROLL-ROYCE Classification Standard
Engine Model TAY 611SER Category Transport
A/W Date 08/25/1994
Other Owner Names
None
Temporary Certificate
Certificate Number T977406 Issue Date 12/30/1997 Expiration Date 01/29/1998
Fuel Modifications
None
KPQL is in Mississippi, not Louisiana.
I saw the RSVP site, also. I checked the Clay Lacy site and there was no mention of N7601. Thereās also no mention of N7601 in the 2005/06 JP Airlines Fleets International book.
Strange.