POH scans FG '68 177 POH '68 177 POH (mod) '69 177 POH '70 FG POH '71 FG POH '72 FG POH pdf '73 FG POH '74 FG POH pdf '75 FG POH doc '75 FG POH pdf '76 FG POH pdf '77 FG POH pdf '78 FG POH pdf RG '71 RG POH '72 RG POH '73 RG POH '74 RG POH '75 RG POH '76 RG POH pdf '77 RG POH pdf '78 RG POH pdf Addendums '86 Appendix