Spangdahlem Air Base (GER) has a requirement for Inspection and Maintenance and Hydrostatic/Ultrasonic Testing on AMEREX model 775 and 776 1501b flight-line fire extinguishers The minimum standard of ... Spangdahlem Air Base (GER) has a requirement for Inspection and Maintenance and Hydrostatic/Ultrasonic Testing on AMEREX model 775 and 776 1501b flight-line fire extinguishers The minimum standard of NFPA 10 is required to meet the 12 years inspection cycle. Services shall include transport of the extinguishers when and if required. Please see Attachments 1 through 7, and the Combined Synopsis/Solicitation for a detailed layout of the requirement.