And-prefaces in aviation communication: A conversation analytic investigation of non-standard turn beginnings in air traffic control/pilot interactions

• Nonstandardized turn beginnings may occur in scripted aviation communication. • And -preface use displayed an orientation to technologically mediated radio context. • And -prefaces in first contacts and summonses marked discontinuity with prior turns. • And -prefaces facilitated repair, task completion announcement, and discontinuity.