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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 Full/Partial Date Description Revision
Service Bulletin Index Full Document Oct 02, 2017 Service Bulletin Index Oct 02, 2017
HC-SB-61-379 Full Document Oct 02, 2017 Propeller – Counterweight Clamp Inspection Oct 02, 2017
HC-ASB-61-378 Full Document Oct 02, 2017 Propeller – Counterweight Clamp Inspection Oct 02, 2017
HC-SB-30-375 Full Document Apr 27, 2017 De-ice – Wire Harness Replacement  1
HC-SB-61-374 Full Document Aug 01, 2017 Propeller – Blade Bearing Race Inspection Criteria  1
HC-SB-61-373 Full Document Feb 01, 2017 Propeller – Propeller Mounting Nut Torque Inspection and Replacement
HC-SB-61-372 Full Document Dec 01, 2016 Governor – Speeder Compression Spring  1
HC-SB-30-371 Full Document Aug 31, 2016 De-ice – Wire Harness Replacement
HC-SB-61-367 Full Document Dec 01, 2016 Composite Blade – NC8834K Blade Replacement  1
HC-SB-30-366 Full Document Feb 01, 2017 De-ice – Wire Harness Replacement 3
HC-SB-30-362 Full Document Mar 17, 2015 De-ice – Wire Harness and De-ice Kit for Korean Aerospace KT-1(C,P,T)
HC-ASB-30-358 Full Document Feb 01, 2016 Anti-ice – Travel Tube Bracket Weldment Replacement 2
HC-ASB-61-357 Full Document Jun 01, 2015 Propeller – Mounting Torque and Spacer Inspection
HC-SB-61-355 Full Document Feb 13, 2015 Propeller – Introduction of Daher-Socata Strake for TBM700 2
HC-SB-30-352 Full Document Dec 18, 2014 Anti-ice – Replacement of Slinger Ring Assembly  1
HC-ASB-61-351 Full Document Mar 7, 2014 Propeller – Piston Unit Replacement  1
HC-SB-61-343 Full Document Feb 19, 2013 Propeller – New Mounting Flange Torque
HC-ASB-61-338 Full Document Oct 27, 2014 Propeller – Diaphragm Inspection 4
HC-ASB-61-332 Full Document Dec 13, 2011 Propeller – Spinner Assembly 835-54(P) installed on Mooney M20( ) aircraft under Hartzell STC SA02414CH-D, 1
HC-SB-61-331 Full Document Apr 01, 2012 Propeller – Upgrade of 1, 8 Style Hubs to D, A Style Hubs 1
HC-SB-61-327 Full Document Jan 14, 2011 PROPELLER – INSPECTION OF D-4511(L)(P) SPINNER
HC-ASB-61-322 Full Document Aug 28, 2012 PROPELLER – BLADE REPLACEMENT 1
HC-SB-61-315 Full Document Jul 1, 2015 Propeller – Hub Pitch Change Bore 2
HC-ASB-61-313 Full Document Jul 15, 2009 Alert Service Bulletin – Counterweight slug bolt inspection and replacement 3
HC-SB-61-311 Full Document Dec 13, 2011 Propeller – Replacement of 835-54(P)Spinner Assembly 5
HC-SB-61-304 Full Document Aug 01, 2012 Propeller – Introduction of an Improved Blade 1
HC-ASB-61-303 Full Document Jun 26, 2008 Removal of F7691 blades from PHC-(C,G)3YF-1RF propellers under STC SA00852AT and SA09025SC 1
HC-ASB-61-297 Full Document Feb 12, 2016 Eddy Current Inspection of the area around the Zerk fitting on the Seneca, Seminole and Duchess 4
HC-SB-61-287 Full Document Jun 05, 2009 Service Bulletin Requiring Optical Comparator Inspection, Blade Radius Inspection, Build-up, Recutting, on E10950 Blades on 1900D. 4
HC-ASB-61-279 Full Document Oct 04, 2005 Recall of B-3339 LFC manufacturer’s lot 56 and lot 12 – On Wing Inspections 4
HC-SB-61-272 Full Document Mar 16, 2006 Torque inspection on mounting nuts on Barons due to missing washer at installation 1
HC-SB-61-269 Full Document Aug 27, 2012 Eddy Current Inspection of fillet radius on all 2-blade non-suffix installed on 360 engines, Duchess 76, Seneca, and Seminole 6
HC-SB-61-266 Full Document May 20, 2013 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 2
HC-SB-61-262 Full Document Apr 25, 2003 Inspection of Hartzite blades
HC-ASB-61-259 Full Document Nov 13, 2009 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 1
HC-SB-61-241 Full Document Dec 21, 1999 Propellers – Assembly and Installation of HC-D2MV20-3
HC-SB-61-240 Full Document Feb 15, 2012 Conversion of Aerobatic HC-( )(2,3)YR-1( )propellers 1
HC-SB-61-232 Full Document Mar 20, 1998 Propeller – Introduction of MV Shank Propellers
HC-SB-61-232 – Table Full Document Mar 20, 1998 Propeller – Introduction of MV Shank Propellers – Table
HC-SB-61-227 Full Document Aug 27, 2012 Eddy Current Inspection of 2-blade compact hubs( )HC-( )2Y( )-( ) 6
HC-SB-61-217 Full Document Sep 10, 2009 X and V shank propellers, Eddy Current Inspection 3
HC-SB-61-181A Full Document Apr 1, 2014 Blades – Blade Corrosion Inspection and Repair 6
SB-165E Full Document Dec 22, 2015 3-Blade compact hub inspection (grease fitting area)  2
SB-136I Full Document Apr 25, 2003 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) I

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