Kit Id: 145

Lower Main Spar Replacement Procedure

To provide a main spar lower cap in these models. The main spar lower cap is a one piece extrusion that extends from W.S. 145.0 left to 145.0 right. Spar caps inspected per the requirements of Twin Commander Service Bulletin No. 208 which are not airworthy may be replaced per this Custom Kit. Spar caps with excessive damage or cracks may be replaced per this Custom Kit.

Issue Date

August 21, 1992

Effectivity

  • 500U
  • 500S
  • 680FL
  • 680FL(P)
  • 680W
  • 681
ID: 50
Rudder Pedal and Control Column Boot Installation Kit
ID: 158
Addition of Inboard Deice Boots
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