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Effective on all Ercoupes serially numbered 2623 and subsequent, the engine cowling will be secured with Camloc fasteners.
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Inspect for fatigue failure in the bulkhead to which the rear landing gear strut is bolted.
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Parts list for Stinson 108-3901001 Float Fitting Kit.
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Mandatory replacement of 1/8 - 7 x 19 flexible stainless steel control cables to prevent cracked nicopress sleeves.
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Procedure for visual inspection of wing tip area for evidence of cracks.
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Deterioration of the insulation on the battery hold-down, allowing the bracket to contact the battery terminals and cause a short circuit.
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Inspecting the clearance between the engine mount and the tail pipe, and the entire nose wheel steering control system, between the nose wheel and the rudder pedals, also be checked for adequate clearances.
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How to determine whether or not the core strands of the rudder cables are broken.
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Installation of a drip strip to prevent fuel overflow from the wing tanks seeping into the cabin.
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In order to supply an alternate source of breather air to eliminate the possibility of pressurizing the engine case in the event that icing occurs at the breather tube end, a slot has been added to the lower portion of the breather tube.