2008AECMA PREN 4179-2008 Aerospace series Qualification and approval of personnel for non-destructive testing Edition P4
2003AECMA PREN 4179-2003 Aerospace Series Qualification and Approval of Personnel for Non-Destructive Testing Edition P 3
2001AECMA PREN 4179-2001 Aerospace Series Qualification and Approval of Personnel for Non-Destructive Testing Edition P 2; Supersedes Edition P 1: January 1995; Replaced by EN 4179