d Directives 3. 100320 check service=bulletins 4. 134401 c/w avionics=20 inventory 5. 191108 review aircra=t status and records 6. 231001 Avionics Func=ional ramp test 7. 291030 Combined Hydr=ulic System DPI (engine driven pump by-pass) inspection. 8. 291031 Flight Hyd sy=tem inspection (engine