Redundant flotation is the key feature of this air-holding tube. High-density, non-absorbent foam is packed into each chamber. In the rare event of a breach in the polyurethane fabric and a loss of air pressure, the packed foam maintains the chambers shape and 90% of it's flotation factor.
A record locator is an alphanumeric code, typically 6 characters in length, used in airline reservation systems to access a specific record.
seriously -- a record locator can only contain six characters. it is, in fact an annoying system limitation that means record locators have to get recycled every months while a ticket record remains active for 365 days, anywho, CRSs, GDSs, these are the same now. The article indeed needs much help.