McFarlane Aviation Products FAA-PMA Replacement Aircraft Parts

Seat Adjustment Spring for Piper Aircraft




Replacement springs just got more affordable!


  • PA28, PA32, PA34, PA44, PA46 series aircraft
  • PMA direct replacement for Piper part number 587-404 (Stabilus Bloc-O-Lift or Gas Springs Corp. EasyLift style cylinder).
  • Piper part number 89178-010 is an assembly that includes the 587-404 cylinder and an adaptor block. Some parts catalogs do not list the 587-404 separately. McFarlane part number MC587-404 is a direct replacement for the cylinder component of 89178-010.
  • Does not replace Piper part number 76445-000 (P.L. Porter Hydro Lock style cylinder).
  • One seat adjustment spring per bucket type seat (bench type passenger seats are excluded).


For ordering information, go to Part Number MC587-404.


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