Thank you everyone for posting. Based upon your responses and this note I received from PHX, I am going for it. I'll let you know how everything worked out afterwards.
"Thank you for contacting Phoenix Sky Harbor International Airport. If you are just dropping off your passengers and not parking, you will be fine. As far as any height restrictions outside of the airport, i.e., on the freeway/s, etc., you would need to contact the Department of Transportation for height clearances on the roads. Thank you.
Customer Service Team
Phoenix Sky Harbor International Airport"
