Can't you just copy and paste some of your data here inside <code> tags? Those will preserve formatting.

Anyway, from this small sample it does look like your columns are fixed width. The first one looks to have either 7 or 8 characters, the second and third 8 characters - try an unpack pattern of "a8 a8 a8" and see what you get. Adjust and extend this pattern as is appropriate for your input data, for example to add another column "a8 a8 a8 a6" and so on.

For a tutorial see "Packing Text" in perlpacktut.