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Following is a list of Hartzell Service Bulletins. All active Hartzell Service Bulletins, Service Letters, Service Instructions, and Service Advisories are available for purchase as part of the Hartzell Technical Documents Library on CD Rom. Contact New Parts Sales at 001 (937) 778-4201 (option 1) or e-mail newpartssales@hartzellprop.com. For related downloadable Service Bulletin Compliance forms, please go to the Hartzell Forms area of our website. NOTE: The following Service Bulletins are arranged in descending numerical order. To open PDF documents, the free Adobe Reader is required. Click here to download and install it.

Title Date Revision Description
Service Bulletin Index Aug. 03, 2020 Aug. 03, 2020 Service Bulletin Index
HC-SB-61-388 Aug. 03, 2020 835-39( ) Spinner Assembly
HC-SB-30-387 Nov. 01, 2019 De-ice – 107383 De-ice Boot
HC-ASB-61-386 Feb 26, 2019 Blade – Shot Peening
HC-SB-61-385 Feb 26, 2019 Propeller – D-5117-1 Counterweight Clamps
HC-ASB-61-384 Feb 26, 2019 Blade – Compression Rolling
HC-SB-61-383 Jul 12, 2018 Propeller – 103559 Hub Shot Peening
HC-SB-61-382 Nov 01, 2018 1 Propeller – 107150 Counterweight Clamp
HC-ASB-61-381 Aug 16, 2018 1 Propeller – Blade Bearing Races
HC-SB-61-379 Nov 28, 2017 1 Propeller – Counterweight Clamp Inspection
HC-ASB-61-378 Feb 09, 2018 2 Propeller – Counterweight Clamp Inspection
HC-SB-61-377 Jan 08, 2019 1 Propeller – Blade Seal Replacement
HC-ASB-61-376 Sep 05, 2018 2 Blade – Counterweight Inspection
HC-SB-30-375 Apr 27, 2017 1 De-ice – Wire Harness Replacement
HC-SB-61-374 Aug 01, 2017 1 Propeller – Blade Bearing Race Inspection Criteria
HC-SB-61-373 Feb 01, 2017 Propeller – Propeller Mounting Nut Torque Inspection and Replacement
HC-SB-61-372 Dec 01, 2016 1 Governor – Speeder Compression Spring
HC-SB-30-371 Aug 31, 2016 De-ice – Wire Harness Replacement
HC-SB-61-367 Dec 01, 2016 1 Composite Blade – NC8834K Blade Replacement
HC-SB-30-366 Feb 01, 2017 3 De-ice – Wire Harness Replacement
HC-SB-30-362 Mar 17, 2015 De-ice – Wire Harness and De-ice Kit for Korean Aerospace KT-1(C,P,T)
HC-ASB-30-358 Feb 01, 2016 2 Anti-ice – Travel Tube Bracket Weldment Replacement
HC-ASB-61-357 Jun 01, 2015 Propeller – Mounting Torque and Spacer Inspection
HC-SB-61-355 Feb 13, 2015 2 Propeller – Introduction of Daher-Socata Strake for TBM700
HC-SB-30-352 Dec 18, 2014 1 Anti-ice – Replacement of Slinger Ring Assembly
HC-ASB-61-351 Mar 7, 2014 1 Propeller – Piston Unit Replacement
HC-SB-61-343 Feb 19, 2013 Propeller – New Mounting Flange Torque
HC-ASB-61-338 Oct 27, 2014 4 Propeller – Diaphragm Inspection
HC-ASB-61-332 Dec 13, 2011 1 Propeller – Spinner Assembly 835-54(P) installed on Mooney M20( ) aircraft under Hartzell STC SA02414CH-D,
HC-SB-61-331 Apr 01, 2012 1 Propeller – Upgrade of 1, 8 Style Hubs to D, A Style Hubs
HC-SB-61-327 Jan 14, 2011 PROPELLER – INSPECTION OF D-4511(L)(P) SPINNER
HC-ASB-61-322 Aug 28, 2012 1 PROPELLER – BLADE REPLACEMENT
HC-SB-61-315 Jul 1, 2015 2 Propeller – Hub Pitch Change Bore
HC-ASB-61-313 Jul 15, 2009 3 Alert Service Bulletin – Counterweight slug bolt inspection and replacement
HC-SB-61-311 Dec 13, 2011 5 Propeller – Replacement of 835-54(P)Spinner Assembly
HC-SB-61-304 Aug 01, 2012 1 Propeller – Introduction of an Improved Blade
HC-ASB-61-303 Jun 26, 2008 1 Removal of F7691 blades from PHC-(C,G)3YF-1RF propellers under STC SA00852AT and SA09025SC
HC-ASB-61-297 Feb 12, 2016 4 Eddy Current Inspection of the area around the Zerk fitting on the Seneca, Seminole and Duchess
HC-ASB-61-292 Apr 05, 2007 Propeller – Blade Clamp Inspection
HC-SB-61-287 Jun 05, 2009 4 Service Bulletin Requiring Optical Comparator Inspection, Blade Radius Inspection, Build-up, Recutting, on E10950 Blades on 1900D.
HC-ASB-61-279 Oct 04, 2005 4 Recall of B-3339 LFC manufacturer’s lot 56 and lot 12 – On Wing Inspections
HC-SB-61-272 Mar 16, 2006 1 Torque inspection on mounting nuts on Barons due to missing washer at installation
HC-SB-61-269 Aug 27, 2012 6 Eddy Current Inspection of fillet radius on all 2-blade non-suffix installed on 360 engines, Duchess 76, Seneca, and Seminole
HC-SB-61-266 May 20, 2013 2 Introduces a recurring inspection interval for the blade, propeller hub, and blade retention bearing on HC-( )3YR-(1,2)( ) propellers with ( )7690J composite blades installed on aircraft with the SMA SR305 engine
HC-SB-61-262 Apr 25, 2003 Inspection of Hartzite blades
HC-ASB-61-259 Nov 13, 2009 1 Hub Replacement – Aluminum Hub Part Numbers D-6522-1, D-6522-2, D-6529-1, D-6552-2, D-6559-3 with certain serial numbers
HC-SB-61-241 Dec 21, 1999 Propellers – Assembly and Installation of HC-D2MV20-3
HC-SB-61-240 Feb 15, 2012 1 Conversion of Aerobatic HC-( )(2,3)YR-1( )propellers
HC-SB-61-232 Mar 20, 1998 Propeller – Introduction of MV Shank Propellers
HC-SB-61-227 Aug 27, 2012 6 Eddy Current Inspection of 2-blade compact hubs( )HC-( )2Y( )-( )
HC-SB-61-217 Nov. 01, 2019 4 X and V shank propellers, Eddy Current Inspection
HC-SB-61-181A Apr 1, 2014 6 Blades – Blade Corrosion Inspection and Repair
SB-165E Dec 22, 2015 2 3-Blade compact hub inspection (grease fitting area)
SB-136I Apr 25, 2003 I Additional blade overhaul and inspection procedures for single and double shoulder blade bores.(Ref. AD 86-05-12, AD 87-05-01, AD 87-16-02, AD 88-24-15, AD 96-18-14)

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