{"id":111,"date":"2012-12-21T15:48:46","date_gmt":"2012-12-21T15:48:46","guid":{"rendered":"http:\/\/hartzellprop.com\/\/?page_id=111"},"modified":"2026-07-08T14:03:28","modified_gmt":"2026-07-08T19:03:28","slug":"service-bulletins","status":"publish","type":"page","link":"https:\/\/hartzellprop.com\/services\/product-support-library\/service-documents\/service-bulletins\/","title":{"rendered":"Service Bulletins"},"content":{"rendered":"\n\n

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 <\/span>newpartssales@hartzellprop.com<\/span><\/a>.<\/span> For related downloadable Service Bulletin Compliance forms, please go to the Hartzell Forms<\/a> area of our website.<\/span> NOTE: The following Service\u00a0Bulletins are arranged in descending numerical order.<\/span><\/b> To open PDF documents, the free Adobe Reader is required. Click here to download and install it.<\/a><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Title<\/th>\nDate<\/th>\nRevision<\/th>\nDescription<\/th>\n<\/tr>\n
Service Bulletin Index<\/a><\/td>\nJul. 08, 2026<\/td>\n\u00a0<\/td>\nService Bulletin Index<\/td>\n<\/tr>\n
HC-ASB-61-413<\/a><\/td>\nJul. 08, 2026<\/td>\n\u00a0<\/td>\nHub Inspection<\/td>\n<\/tr>\n
HC-ASB-61-410<\/a><\/td>\nMar 13, 2026<\/td>\n\u00a0<\/td>\nA-2044 Hex Nut Inspection<\/td>\n<\/tr>\n
\u00a0HC-ASB-61-409<\/a><\/td>\nApr. 15, 2026<\/td>\n1<\/td>\nA-1373 Hex Nut Inspection<\/td>\n<\/tr>\n
HC-SB-61-408<\/a><\/td>\nJul. 08, 2026<\/td>\n\u00a0<\/td>\nCleaning\/Lubricating Beta System Components<\/td>\n<\/tr>\n
HC-ASB-61-407<\/a><\/td>\nFeb. 11, 2026<\/td>\n\u00a0<\/td>\nBeta Rod Nut\/Safety Wire Inspection<\/td>\n<\/tr>\n
HC-ASB-61-406<\/a><\/td>\nJun. 12, 2024<\/td>\n\u00a0<\/td>\nCounterweight Mounting Bolt Replacement<\/td>\n<\/tr>\n
HC-ASB-61-405<\/a><\/td>\nOct.13, 2023<\/td>\n\u00a0<\/td>\n109438 Beta Rod Support Ring<\/td>\n<\/tr>\n
HC-ASB-61-404<\/a><\/td>\nOct. 13, 2023<\/td>\n2<\/td>\nA-321 Blade Clamp Screw Inspection<\/td>\n<\/tr>\n
HC-SB-61-403<\/a><\/td>\nApr. 05, 2023<\/td>\n\u00a0<\/td>\nFC7063Q Blade Knob Angle<\/td>\n<\/tr>\n
HC-ASB-61-402<\/a><\/td>\nMar. 08, 2023<\/td>\n\u00a0<\/td>\nTrinity Specialized Services\/Mid America Propeller\/Specialized Propeller Services, LLC<\/td>\n<\/tr>\n
HC-SB-61-401<\/a><\/td>\nDec. 07, 2022<\/td>\n\u00a0<\/td>\n5D31-NK366B1( ): 107373-2 Spring Guide<\/td>\n<\/tr>\n
HC-ASB-61-399<\/a><\/td>\nOct. 05, 2022<\/td>\n1<\/td>\nPropellers Overhauled by China Flying Dragon General Aviation<\/td>\n<\/tr>\n
HC-SB-61-397<\/a><\/td>\nSep. 01, 2022<\/td>\n\u00a0<\/td>\nErosion Shield Inspection: E10950P( ) Blades<\/td>\n<\/tr>\n
HC-ASB-61-396<\/a><\/td>\nMar. 09, 2022<\/td>\n1<\/td>\nRaptor Hub – Shot Peening<\/td>\n<\/tr>\n
HC-ASB-61-395<\/a><\/td>\nOctober 06, 2021<\/td>\n\u00a0<\/td>\nA-2415-15 Pitch Change Rod (Raptor reciprocating)<\/td>\n<\/tr>\n
HC-SB-61-394<\/a><\/td>\nApr. 05, 2021<\/td>\n\u00a0<\/td>\nInspection and Modification of Guide Lugs<\/td>\n<\/tr>\n
HC-SB-61-393<\/a><\/td>\nApr. 05, 2021<\/td>\n1<\/td>\nPropeller Mounting Nut\/Torque Inspection<\/td>\n<\/tr>\n
HC-SB-61-392<\/a><\/td>\nFeb. 23, 2022<\/td>\n2<\/td>\n108298 Cylinder Bushing and 108346 Hub Bushing<\/td>\n<\/tr>\n
HC-SB-30-390<\/a><\/td>\nJune 02, 2021<\/td>\n\u00a0<\/td>\nSpinner\/Anti-ice Travel Tube Interference<\/td>\n<\/tr>\n
HC-SB-61-389<\/a><\/td>\nFeb. 08, 2023<\/td>\n1<\/td>\nPitch Change Knob Brackets\/Mounting Hardware<\/td>\n<\/tr>\n
HC-SB-61-388<\/a><\/td>\nAug. 03, 2020<\/td>\n\u00a0<\/td>\n835-39( ) Spinner Assembly<\/td>\n<\/tr>\n
HC-SB-30-387<\/a><\/td>\nFeb. 11, 2026<\/td>\n1<\/td>\nDe-ice – 107383 De-ice Boot<\/td>\n<\/tr>\n
HC-ASB-61-386<\/a><\/td>\nFeb 26, 2019<\/td>\n\u00a0<\/td>\nBlade – Shot Peening<\/td>\n<\/tr>\n
HC-SB-61-385<\/a><\/td>\nFeb 26, 2019<\/td>\n\u00a0<\/td>\nPropeller – D-5117-1 Counterweight Clamps<\/td>\n<\/tr>\n
HC-ASB-61-384<\/a><\/td>\nFeb 26, 2019<\/td>\n\u00a0<\/td>\nBlade – Compression Rolling<\/td>\n<\/tr>\n
HC-SB-61-383<\/a><\/td>\nJul 12, 2018<\/td>\n\u00a0<\/td>\nPropeller – 103559 Hub Shot Peening<\/td>\n<\/tr>\n
HC-SB-61-382<\/a><\/td>\nNov 01, 2018<\/td>\n1<\/td>\nPropeller – 107150 Counterweight Clamp<\/td>\n<\/tr>\n
HC-ASB-61-381<\/a><\/td>\nAug\u00a016, 2018<\/td>\n1<\/td>\nPropeller – Blade Bearing Races<\/td>\n<\/tr>\n
HC-SB-61-379<\/a><\/td>\nNov 28, 2017<\/td>\n1<\/td>\nPropeller – Counterweight Clamp Inspection<\/td>\n<\/tr>\n
HC-ASB-61-378<\/a><\/td>\nFeb 09, 2018<\/td>\n2<\/td>\nPropeller – Counterweight Clamp Inspection<\/td>\n<\/tr>\n
HC-SB-61-377<\/a><\/td>\nJan 08, 2019<\/td>\n1<\/td>\nPropeller – Blade Seal Replacement<\/td>\n<\/tr>\n
HC-ASB-61-376<\/a><\/td>\nSep 05, 2018<\/td>\n2<\/td>\nBlade – Counterweight Inspection<\/td>\n<\/tr>\n
HC-SB-30-375<\/a><\/td>\nApr 27, 2017<\/td>\n1<\/td>\nDe-ice – Wire Harness Replacement<\/td>\n<\/tr>\n
HC-SB-61-374<\/a><\/td>\nAug 01, 2017<\/td>\n1<\/td>\nPropeller – Blade Bearing Race Inspection Criteria<\/td>\n<\/tr>\n
HC-SB-61-373<\/a><\/td>\nFeb 01, 2017<\/td>\n\u00a0<\/td>\nPropeller – Propeller Mounting Nut Torque Inspection and Replacement<\/td>\n<\/tr>\n
HC-SB-30-371<\/a><\/td>\nAug 31, 2016<\/td>\n\u00a0<\/td>\nDe-ice – Wire Harness Replacement<\/td>\n<\/tr>\n
HC-SB-61-367<\/a><\/td>\nDec 01, 2016<\/td>\n1<\/td>\nComposite Blade – NC8834K Blade Replacement<\/td>\n<\/tr>\n
HC-SB-30-366<\/a><\/td>\nFeb 01, 2017<\/td>\n3<\/td>\nDe-ice – Wire Harness Replacement<\/td>\n<\/tr>\n
HC-SB-61-363<\/a><\/td>\nJul 01, 2015<\/td>\n1<\/td>\nA-2051-1 Bolt with Three-direction Safety Wire Holes<\/td>\n<\/tr>\n
HC-SB-30-362<\/a><\/td>\nMar 17, 2015<\/td>\n\u00a0<\/td>\nDe-ice – Wire Harness and De-ice Kit for Korean Aerospace KT-1(C,P,T)<\/td>\n<\/tr>\n
HC-ASB-30-358<\/a><\/td>\nFeb 01, 2016<\/td>\n2<\/td>\nAnti-ice – Travel Tube Bracket Weldment Replacement<\/td>\n<\/tr>\n
HC-ASB-61-357<\/a><\/td>\nJun 01, 2015<\/td>\n\u00a0<\/td>\nPropeller – Mounting Torque and Spacer Inspection<\/td>\n<\/tr>\n
HC-SB-61-355<\/a><\/td>\nFeb 13, 2015<\/td>\n2<\/td>\nPropeller – Introduction of Daher-Socata Strake for TBM700<\/td>\n<\/tr>\n
HC-SB-30-352<\/a><\/td>\nDec 18, 2014<\/td>\n1<\/td>\nAnti-ice – Replacement of Slinger Ring Assembly<\/td>\n<\/tr>\n
HC-ASB-61-351<\/a><\/td>\nMar 7, 2014<\/td>\n1<\/td>\nPropeller – Piston Unit Replacement<\/td>\n<\/tr>\n
HC-SB-61-343<\/a><\/td>\nFeb 19, 2013<\/td>\n\u00a0<\/td>\nPropeller – New Mounting Flange Torque<\/td>\n<\/tr>\n
HC-ASB-61-338<\/a><\/td>\nOct 27, 2014<\/td>\n4<\/td>\nPropeller – Diaphragm Inspection<\/td>\n<\/tr>\n
HC-ASB-61-332<\/a><\/td>\nDec 13, 2011<\/td>\n1<\/td>\nPropeller – Spinner Assembly 835-54(P) installed on Mooney M20( ) aircraft under Hartzell STC SA02414CH-D,<\/td>\n<\/tr>\n
HC-SB-61-331<\/a><\/td>\nApr 01, 2012<\/td>\n1<\/td>\nPropeller – Upgrade of 1, 8 Style Hubs to D, A Style Hubs<\/td>\n<\/tr>\n
HC-SB-61-327<\/a><\/td>\nJan 14, 2011<\/td>\n\u00a0<\/td>\nPROPELLER – INSPECTION OF D-4511(L)(P) SPINNER<\/td>\n<\/tr>\n
HC-ASB-61-322<\/a><\/td>\nAug 28, 2012<\/td>\n1<\/td>\nPROPELLER – BLADE REPLACEMENT<\/td>\n<\/tr>\n
HC-SB-61-315<\/a><\/td>\nJul 1, 2015<\/td>\n2<\/td>\nPropeller – Hub Pitch Change Bore<\/td>\n<\/tr>\n
HC-ASB-61-313<\/a><\/td>\nJul 15, 2009<\/td>\n3<\/td>\nAlert Service Bulletin – Counterweight slug bolt inspection and replacement<\/td>\n<\/tr>\n
HC-SB-61-311<\/a><\/td>\nDec 13, 2011<\/td>\n5<\/td>\nPropeller – Replacement of 835-54(P)Spinner Assembly<\/td>\n<\/tr>\n
HC-SB-61-304<\/a><\/td>\nAug 01, 2012<\/td>\n1<\/td>\nPropeller – Introduction of an Improved Blade<\/td>\n<\/tr>\n
HC-ASB-61-303<\/a><\/td>\nJun 26, 2008<\/td>\n1<\/td>\nRemoval of F7691 blades from PHC-(C,G)3YF-1RF propellers under STC SA00852AT and SA09025SC<\/td>\n<\/tr>\n
HC-ASB-61-297<\/a><\/td>\nFeb 12, 2016<\/td>\n4<\/td>\nEddy Current Inspection of the area around the Zerk fitting on the Seneca, Seminole and Duchess<\/td>\n<\/tr>\n
HC-ASB-61-292<\/a><\/td>\nApr 05, 2007<\/td>\n\u00a0<\/td>\nPropeller – Blade Clamp Inspection<\/td>\n<\/tr>\n
HC-SB-61-287<\/a><\/td>\nJun 05, 2009<\/td>\n4<\/td>\nService Bulletin Requiring Optical Comparator Inspection, Blade Radius Inspection, Build-up, Recutting, on E10950 Blades on 1900D.<\/td>\n<\/tr>\n
HC-ASB-61-279<\/a><\/td>\nOct 04, 2005<\/td>\n4<\/td>\nRecall of B-3339 LFC manufacturer’s lot 56 and lot 12 – On Wing Inspections<\/td>\n<\/tr>\n
HC-SB-61-272<\/a><\/td>\nMar 16, 2006<\/td>\n1<\/td>\nTorque inspection on mounting nuts on Barons due to missing washer at installation<\/td>\n<\/tr>\n
HC-SB-61-269<\/a><\/td>\nAug 27, 2012<\/td>\n6<\/td>\nEddy Current Inspection of fillet radius on all 2-blade non-suffix installed on 360 engines, Duchess 76, Seneca, and Seminole<\/td>\n<\/tr>\n
HC-SB-61-266<\/a><\/td>\nMay 20, 2013<\/td>\n2<\/td>\nIntroduces 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<\/td>\n<\/tr>\n
HC-SB-61-262<\/a><\/td>\nApr 25, 2003<\/td>\n\u00a0<\/td>\nInspection of Hartzite blades<\/td>\n<\/tr>\n
HC-ASB-61-259<\/a><\/td>\nNov 13, 2009<\/td>\n1<\/td>\nHub Replacement – Aluminum Hub Part Numbers D-6522-1, D-6522-2, D-6529-1, D-6552-2, D-6559-3 with certain serial numbers<\/td>\n<\/tr>\n
HC-SB-61-241<\/a><\/td>\nDec 21, 1999<\/td>\n\u00a0<\/td>\nPropellers – Assembly and Installation of HC-D2MV20-3<\/td>\n<\/tr>\n
HC-SB-61-240<\/a><\/td>\nFeb 15, 2012<\/td>\n1<\/td>\nConversion of Aerobatic HC-( )(2,3)YR-1( )propellers<\/td>\n<\/tr>\n
HC-SB-61-232<\/a><\/td>\nMar 20, 1998<\/td>\n\u00a0<\/td>\nPropeller – Introduction of MV Shank Propellers<\/td>\n<\/tr>\n
HC-SB-61-227<\/a><\/td>\nAug 27, 2012<\/td>\n6<\/td>\nEddy Current Inspection of 2-blade compact hubs( )HC-( )2Y( )-( )<\/td>\n<\/tr>\n
HC-SB-61-217<\/a><\/td>\nNov. 01, 2019<\/td>\n4<\/td>\nX and V shank propellers, Eddy Current Inspection<\/td>\n<\/tr>\n
HC-SB-61-181A<\/a><\/td>\nMar 13, 2026<\/td>\n7<\/td>\nBlades – Blade Corrosion Inspection and Repair<\/td>\n<\/tr>\n
SB-165E<\/a><\/td>\nDec 22, 2015<\/td>\n2<\/td>\n3-Blade compact hub inspection (grease fitting area)<\/td>\n<\/tr>\n
SB-136I<\/a><\/td>\nApr 25, 2003<\/td>\nI<\/td>\nAdditional 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)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n","protected":false},"excerpt":{"rendered":"

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, […]<\/p>\n","protected":false},"author":6,"featured_media":2589,"parent":85,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-111","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nService Bulletins | Hartzell Propeller Inc.<\/title>\n<meta name=\"description\" content=\"All active Hartzell Service Bulletins are available for purchase as part of the Hartzell Technical Documents Library on CD Rom.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hartzellprop.com\/services\/product-support-library\/service-documents\/service-bulletins\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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