Hercules propellers owners guide. This manual is also supplied in printed format with every new propeller.

Hercules flight testing guide & form. Aid to correct flight testing of your new propeller to join the owner’s club online

Light aircraft association mod 4 form. Uk light aircraft association propeller change form (mod 4)

UK CAA A8-24

Overhaul Approvals

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UK CAA A8-21

Design and Production Approvals

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