Document ID: chunk:federal_register_of_legislation:F2007L03635:body:0:p1
Version: federal_register_of_legislation:F2007L03635
Segment Type: other
Provision Reference: 
Character Range: 0–3498

AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Propellers - Variable Pitch - Hartzell
AD/PHZL/89  Propeller Mounting Flanges  11/2007 TX

Applicability:  Hartzell Propeller Inc. model HC-B5MP-3( )/M10282A( )+6 and
                HC-B5MP-3( )/M10876( )( )( )( ) five-bladed propellers.  These propellers are installed on the following aircraft:
                Aeroplane Manufacturer  Model                   Propeller/Blade            Supplemental Type Certificate
                Nord                    262(A) Frakes (Mohawk)  HC-B5MP-3(A)/M10282A(B)+6  SA2369SW
                Short Brothers          SD3-30 (Sherpa)         HC-B5MP-3A/M10282AB+6      --
                Short Brothers          SD3-60                  HC-B5MP-3C/M10876ASK       --
                Short Brothers          SD3-60-200 (Sherpa)     HC-B5MP-3C/M10876ANSK      --
                PZL Mielec              PZL-M18( ) (Dromader)   HC-B5MP-3C/M10876(A)( )    SA1014GL

                The parentheses appearing in the propeller model number indicates the presence or absence of an additional letter(s) that varies the basic propeller model.  This AD still applies regardless of whether these letters are present or absent in the propeller model designation.
Requirement:       1. If either the propeller mounting flange or the engine mounting flange has not been resurfaced using either Hartzell Propeller Inc. Alert Service Bulletin (SB) No. A203A, dated 5 January 1995, or SB No. HC-SB-61-275, dated 2 June 2005, perform a torque inspection of the propeller mounting bolts.

                   Use paragraphs 3.A. through 3.A.(4) of the Accomplishment Instructions of Hartzell Propeller Inc. SB No. HC-SB-61-275, to do the inspections.

                   2. If the torque of any one bolt is found to be less than 90 ft-lbs, as detailed in Requirement 1 of this AD then remove and inspect the propeller, and resurface the flanges as necessary.

                   Use paragraphs 3.B. through 3.B.(5) of the Accomplishment Instructions of Hartzell Propeller Inc. SB No. HC-SB-61-275, to do the inspection and resurfacing.  Replace all mounting bolts with new mounting bolts.

                3. If the propeller and engine mounting flanges have been resurfaced using either Hartzell Propeller Inc. Alert SB No. A203A, or SB No. HC-SB-61-275, and a fretting disk was not installed, then:

                  a. Perform a torque inspection of the propeller mounting bolts.

                  Use paragraphs 3.A. through 3.A.(4) of the Accomplishment Instructions of Hartzell Propeller Inc. SB No. HC-SB-61-275, to do the inspections.

                  b. If the torque of any one bolt is found to be less than 90 ft-lbs, remove and inspect the propeller, and resurface the flanges as necessary.

                  Use paragraphs 3.B. through 3.B.(5) of the Accomplishment Instructions