Burbank Fire Dept. Truck 712 Burbank, CA Truck 712 is the former Truck 12, and was replaced by the current Truck 12.
Truck 712 is housed at Station 13. It could technicaly be called Truck 713, but the numbers on the rig say it is Truck 12.
Truck 712 is a reserve truck and can be crewed by a reserve crew or the crew of either Truck 11 or 12 if it is needed.  It could be "logged onto the system" with any number. (i.e. Truck 11,12,711,712 etc.)
I've been told that Burbank also still has a Crown Snorkel lift truck, but the last time I saw it it was in a Pasadena Unified School District yard in Altadena. 
The Crown Snorkel was Truck 14 for many years, and was bumped to reserve when this truck was purchased. Later the truck from Station 14 was moved to Station 12 when Station 12 was rebuilt.