User-agent: *
Disallow: *.jpg
Disallow: *.JPG
Disallow: *.bmp
Disallow: *.BMP
Disallow: *.pdf
Disallow: *.PDF

Disallow: /afd/*.pdf
Disallow: /afd/*.PDF
Disallow: /approach/*.PDF
Disallow: /approach plates/*.PDF
Disallow: /approach/*.pdf
Disallow: /approach plates/*.pdf