1. Unknown
  2. Piet van Oorschot Fokker employee and then project leader of the S.IV program
  3. Fokker's famous test pilot, Edwin Boshof
  4. Jan Schenk Tech. Rep. at Fokker
  5. Sieg Hertenstein, a former Fokker employee, he specialized in tension cables and the associated tondeurs
  6. Unknown
  7. Unknown
  8. Fokker Test Pilot Wim Huson