Why are helicopters so expensive? Part 3.
Askue
Vaughan
V
Sikorsky Aircraft Corp. in Stratford, Conn, USA.
D000068:Accreditation; D017732:Air Ambulances / Q000191:economics*; D001359:Aviation / Q000295:instrumentation*; D002201:Capital Expenditures; D004869:Equipment Safety; D017408:Guidelines as Topic; D008283:Maintenance / Q000191:economics; D017751:Safety Management / Q000191:economics; D014481:United States