safety study
розробка з техніки безпеки
розробка з техніки безпеки
study on safety aspects of ground-handling arrangements
safety and arming device / safety-and-arming device
aerodrome meteorological observing systems study group
aeronautical data modeling study group
aeronautical information and charts study group
aircraft classification number study group (ACNSG)
aircraft noise and design effects study (ANDES)
aircraft noise design effects study