Can we get a little more info? Are you looking for a ruling for a future tournament such as Nationals or next year? If so, submit a question via the official clarification system at soinc.org or have your coach ask a question at the coaches' meeting Friday night. Also, the rules will likely change next year, so what was illegal this year may (or may not) be legal next.
Are you just looking for a clarification about why it was declared illegal at a previous tournament? If so, what tournament was it and what did the event supervisor tell you?
National event supervisor - Helicopters