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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 October 06, 2021   Service Bulletin Index      
HC-ASB-61-395 October 06, 2021   A-2415-15 Pitch Change Rod (Raptor reciprocating)      
HC-SB-61-394 Apr. 05, 2021   Inspection and Modification of Guide Lugs      
HC-SB-61-393 Apr. 05, 2021 1 Propeller Mounting Nut/Torque Inspection      
HC-SB-61-392 Jul. 07, 2021 1 108298 Cylinder Bushing and 108346 Hub Bushing      
HC-SB-30-390 June 02, 2021   Spinner/Anti-ice Travel Tube Interference      
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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