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UPDATED DOCUMENTATION
 
SERVICE BULLETIN #0017 - POTENTIAL RISK OF SHEARING OF CONTROL STOP PLATE RIVETS
NOTE – THIS SERVICE BULLETIN REPLACES SAFETY ALERT #0012 IN ITS ENTIRETY

RELEASE DATE: 2020/07/01

EFFECTIVE DATE: 2020/07/01

SUBJECT: Potential risk of shearing of control stop plate rivets

MODELS AFFECTED: Sling 4 and Sling 4 TSi aircraft

COMPLIANCE TIME: At the next MPI (Mandatory Periodic Inspection)

LABOUR TIME: Inspection only: 2 hours
                           Inspection and repair: 6 hours

DESCRIPTION:
 
The Service Bulletin provides the instructions for the inspection, and if required, repair of the elevator control torque tube for Sling 4 and Sling 4 TSi aircraft. Internal quality checks have shown that elevator control stop plates in some aircraft may have been installed with aluminium 3.2 x 8 mm domed rivets instead of stainless steel 3.2 x 8 mm domed rivets. These aluminium rivets shear at lower control stick loads compared to the stainless-steel rivets, so it must be ensured that stainless steel rivets are installed.   

This Service Bulletin requires that inspections be carried out on all flying aircraft as well as kit-built aircraft still under construction prior to
first flight. 
 
Download Service Bulletin #0017 Official Letter
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Sling Aircraft · Tedderfield Airpark · 23 Nettleton Road · Eikenhof, Gauteng 1872 · South Africa

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