. "1930Z"^^ . . "1918Z"^^ . "Henry Alan Marsh AFC AFRAeS (29 January 1901\u201313 June 1950) was a British rotorcraft instructor and test pilot."@en . "1950-06-13Z"^^ . "1901Z"^^ . "Alan Marsh"@en . "British test pilot" . . "1901-01-29Z"^^ . . . "United Kingdom" . "Marsh, Alan"@en . "1950Z"^^ .