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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 | Oct. 16, 2024 | Service Bulletin Index | |
| HC-ASB-61-406 | Jun. 12, 2024 | Counterweight Mounting Bolt Replacement | |
| HC-ASB-61-405 | Oct.13, 2023 | 109438 Beta Rod Support Ring | |
| HC-ASB-61-404 | Oct. 13, 2023 | 2 | A-321 Blade Clamp Screw Inspection |
| HC-SB-61-403 | Apr. 05, 2023 | FC7063Q Blade Knob Angle | |
| HC-ASB-61-402 | Mar. 08, 2023 | Trinity Specialized Services/Mid America Propeller/Specialized Propeller Services, LLC | |
| HC-SB-61-401 | Dec. 07, 2022 | 5D31-NK366B1( ): 107373-2 Spring Guide | |
| HC-ASB-61-399 | Oct. 05, 2022 | 1 | Propellers Overhauled by China Flying Dragon General Aviation |
| HC-SB-61-397 | Sep. 01, 2022 | Erosion Shield Inspection: E10950P( ) Blades | |
| HC-ASB-61-396 | Mar. 09, 2022 | 1 | Raptor Hub – Shot Peening |
| 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 | Feb. 23, 2022 | 2 | 108298 Cylinder Bushing and 108346 Hub Bushing |
| HC-SB-30-390 | June 02, 2021 | Spinner/Anti-ice Travel Tube Interference | |
| HC-SB-61-389 | Feb. 08, 2023 | 1 | Pitch Change Knob Brackets/Mounting Hardware |
| 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-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) |
