Once got on some strange looking plane at EIS for SJU. 4 small engines, tricycle gear, rear entrance 1&1 or 1&2 seating on a long fusalage.

Everybody sat from the rear door forward. The plane tipped back on its' tail.

Pilot came out and requested people move forward(uphill). Later, I was reading their magazine, and the front inside sheet had a picture of the pilot. he was the president of the company.