Document ID: chunk:federal_register_of_legislation:F2009L02663:body:0:p2
Version: federal_register_of_legislation:F2009L02663
Segment Type: other
Provision Reference: 
Character Range: 5018–7319

(LEFT SIDE)

               HC-B4MN-5BL         ROCKWELL                     OV-10 (RIGHT SIDE)
               HC-B5MP-3A          SHORT BROTHERS               SD3-30
               HC-B5MP-3C          SHORT BROTHERS               SD3-60-200,
                                                                SD3-SHERPA-200
               HC-B3TF-7A          SIAI MARCHETTI (AERMACCHI)   F.260C, D
               HC-B3TF-7A          SIAI MARCHETTI (AERMACCHI)   SM-1019
               HC-B3TF-7A          SIAI MARCHETTI (VULCANAIR)   SF600 CANGURO
               HC-B5MP-3(F)        THRUSH AIRCRAFT              S-2R-T660
               HC-B3TN-5FL, -5NL   TWIN COMMANDER               690A, 690B, 690C
               HC-B3TF-7A          VALMET                       L-90TP
               HC-B3TF-7A          VUCANAIR (PARTENAVIA)        AP68TP-300, -600

Requirement:  Identify and remove all propeller blade counterweight slug bolts, P/N B-3386-14H, LFC manufacturing lot 224, from service, and install serviceable bolts.

              Use paragraphs 3.A.(1) through 3.A.(4)(b)5 of the Accomplishment Instructions of Hartzell Propeller Inc. ASB No. HC- ASB-61-313, Revision 2, dated 27 March 2009, to do the identification, removals from service, and installations.

              For the purpose of this AD, a serviceable propeller blade counterweight slug bolt is a P/N B-3386-14H bolt with an LFC manufacturing lot other than lot 224.

              Note 2:  FAA AD 2009-10-14 Amdt 39-15910 dated 8 May 2009 refers.
Compliance:   Within 50 flight hours after the effective date of this AD, unless the actions have already been done.
              This Airworthiness Directive becomes effective on 30 July 2009.

Background:  This AD results from two reports of failure of the bolts that attach the propeller blade counterweight slug, and separation of the counterweight slug which led to propeller vibration and damage to the propeller spinner.  Investigation by Hartzell Propeller Inc. revealed that the bolts failed due to a bolt manufacturing defect.  The issuing of this AD is intended to prevent separation of the propeller blade counterweight slug, which could lead to injury and damage to the aeroplane.

James Coyne
Delegate of the Civil Aviation Safety Authority

16 June 2009