Document ID: chunk:federal_register_of_legislation:F2006B11215:body:0:p2
Version: federal_register_of_legislation:F2006B11215
Segment Type: other
Provision Reference: 
Character Range: 3299–5027

visually inspect each connecting rod bolt to determine if the bolt head is clearly identified with:

(a)     raised letters "SPS", "S", "C", or "FC", identifying them as Textron Lycoming parts, or

(b)     SL75060 etched on the head, identifying them as satisfactory PMA parts manufactured by Superior Air Parts, Inc., or

(c)     AL75060 forged into the head, identifying them as PMA parts manufactured by Aircraft Technologies, Inc.

           If the connecting rod bolts can be positively identified as satisfying the criteria specified in Requirement 2 no further action is required. Ensure an appropriate statement is entered into the engine log book.

             3.    If the connecting rod bolts cannot be positively identified as specified in Requirements 1 or 2 of this Directive, remove unapproved connecting rod bolts and replace with serviceable parts.

           Note 1: FAA Priority Letter Airworthiness Directive 95-07-1 also refers.

           Note 2: Further information is contained in Superior Air Parts Service Bulletin No. 95-002, dated 3 March 1995, which may be obtained by contacting the local Superior Air Parts representative on (07) 274 4288.

 Compliance: Effective 31 March 1995, prior to further flight.

               Background: The FAA has advised that a substantial number of connecting rod bolts have been shipped. At least two engine failures have occurred due to fracture of these bolts.

               Laboratory examination of these unapproved bolts has determined that the bolts do not meet material or design specifications. The nature of the discrepancies is such that failure is unpredictable and it is impossible to determine analytically how long the bolts may remain intact.