All, The thread is so long because the answers are so hard to find. The type certificates do not seem to address the bottom of the airspeed indicator. However, looking at Ercoupe Information Letter No 1 - (page 2) published January 1, 1956, under Point 3 of Changes Necessary to Convert CD to D Model, it discusses "painting markings on the dial face of the instruments to read." Concerning the airspeed indicator it states "Green arc from 48.5 m.p.h. to 114 m.p.h." While it may be debated that an Information Letter is not an FAA document and may therefore be ignored, I would suggest that the 48.5 m.p.h. may be a good place to start the green line until someone comes up with a better suggestion.
John Roach N 2427H Percy wrote: > > "FYI. from the Ercoupe A-787 Type Certificate: > > Airspeed Limits > Maneuvering 108 mph (94 kts) True Ind. > Max. structural cruising 114 mph (99 kts) True Ind. > Never exceed 144 mph (125 kts) True Ind. > > > I would consider these published speeds. > > Hartmut" > > The Type Certificate Data Sheets are The Authority > on instrument markings. > > Ercoupe C and CD (Sport Pilot legal) A-718 > All other models (Forney, et al) A-787 > > Verify your gages with www.faa.gov. Why is this > thread so long? > > Percy (who has to know this stuff) in NM, USA > >
