Example:
Southwest Airlines reg. # N725LV

You mean that somebody has to fill in the info before it will auto-fill?
That's kinda lame.
I hope you didn't have to pay any money for this "new" feature.

I've been searching a little bit and found this on the FAA's website:

You need to be a member to view our links.

You may download the entire database to your computer by clicking on the link below. The archive file contains the:

    * Aircraft Registration Master file
    * Aircraft Dealer Applicant file
    * Aircraft Document Index file
    * Aircraft Reference file by Make/Model/Series Sequence
    * Deregistered Aircraft file
    * Engine Reference file
    * Reserve N-Number file

We update these files weekly. The records in each database file are stored in a comma delimited format (CDF) and can be manipulated by common database management applications, such as MS Access.

I'm no script kiddie, but I know that the person that wrote this cool gallery software can probably do it in his sleep.
I've copied script and tinkered with it to get it to work correctly on my sites so it shouldn't be too hard.
I think I'm going to try to import this database into a mySQL database on my server and see what I can do just fooling around a little bit. I love tinkering with stuff like this.

After about 4 hours of farting around I finally got the file imported into a database. There are 29 fields in the database including the owner/airline.
Should be easy for your script author to do something with the file.
It's pretty cool the feds make this info available.