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.
Passenger name record. In the airline and travel industries, a passenger name record (PNR) is a record in the database of a computer reservation system (CRS) that consists of the personal information for a passenger and also contains the itinerary for the passenger, or a group of passengers travelling together.