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What is the ground-air visual signal code for use by survivors on the ground to indicate "require medical assistance"?

Refer to figure.

ICAO Annex 12
Appendix. Search And Rescue Signals
2. Ground-air visual signal code
2.1 Ground-air visual signal code for use by survivors

  • "V" = Require assistance
  • "N" = No or negative
  • "Y" = Yes or affirmative
  • "X" = Require medical assistance

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