Hartzell Propeller Service Letters Collection with June 2023 Index – PDF

Description

File Details

• Document Type: Service Letter Collection & Index
• Brand: Hartzell Propeller Inc.
• Language: English
• Page Count: 398
• File Format: PDF
• Date of Index: June 2023
• Document Number: HC-SL-61-375, HC-SL-61-373, HC-SL-61-372, HC-SL-61-371, HC-SL-61-370, HC-SL-61-368, HC-SL-61-367, HC-SL-61-366, HC-SL-61-364, HC-SL-61-362, HC-SL-61-361, HC-SL-61-360, HC-SL-61-359, HC-SL-61-358, HC-SL-61-354, HC-SL-61-353, HC-SL-61-350, HC-SL-61-346, HC-SL-61-343, HC-SL-61-324, HC-SL-61-277, HC-SL-61-265, HC-SL-61-254, HC-SL-61-241, HC-SL-61-231, HC-SL-61-225, HC-SL-61-187, HC-SL-61-185, HC-SL-61-171, HC-SL-61-165, HC-SL-61-61Y, HC-SL-61-48A, HC-SL-30-369, HC-SL-30-335, HC-SL-30-308, HC-SL-30-295, HC-SL-30-279, HC-SL-30-260, HC-SL-30-259, HC-SL-30-246

Chapters Covered

This collection provides a complete historical archive of Hartzell Propeller Inc. service letters, including the latest revisions up to June 2023.

• Active Service Letters:
  • HC-SL-61-375: Tanis Aircraft Products/Hartzell Propeller Inc. Part Number Cross-Reference
  • HC-SL-61-373: Split Bearing Race Adhesive (CM94 as alternate for CM16)
  • HC-SL-61-372: Hartzell Propeller Inc. Blade Decals (New design p/n 106947)
  • HC-SL-61-371: Introduction of Alternate O-ring (p/n C-3317-AR-157) for HC-92(W,Z)(F,K)-(1,8) propellers
  • HC-SL-61-370: Beta System Cleaning Procedure for agricultural/firefighting installations
  • HC-SL-61-368: Introduction of Redesigned Propeller Hubs for ( )HC-()3Y(D,F,R,N)-1,2,4,5,7() compact propellers
  • HC-SL-61-367: 107995-() Counterweight Mounting Bolts (replacement for A-2036-() cap screws)
  • HC-SL-61-366: Propeller – NYCO GN3058 Grease (Preferred grease for affected propellers)
  • HC-SL-61-364: Propeller – Corrosion Inhibitor on Counterweights (CM352 application)
  • HC-SL-61-362: Propeller – A-1851-T Blade Retention Bearings (redesigned with chamfer)
  • HC-SL-61-361: Propeller – Unfeathering Tool TE316 (modification for A-7428 stop plate)
  • HC-SL-61-360: Blade – Damage Evaluation for NC10245() Blades (installed on Pilatus PC-12)
  • HC-SL-61-359: Polane® Paint (Silver) CM163 (new formula from Sherwin-Williams)
  • HC-SL-61-358: Propeller – Beta System Puller TE100 (adapter plate kit TE615)
  • HC-SL-61-354: Propeller – Lubrication Fittings (introduction of 106545 lubrication hole plugs)
  • HC-SL-61-353: Propeller – AeroShell Grease 5 (replacement recommendation with AeroShell Grease 6)
  • HC-SL-61-350: Propeller – Piston Unit C-497() (disassembly/assembly procedure)
  • HC-SL-61-346: Spinner – Bulkhead Modification (drain holes for 104154 and 105178 bulkheads)
  • HC-SL-61-343: Product Category – Lubrication Procedure (90 degree grease gun fitting)
  • HC-SL-61-324: Blade – Aluminum Blade Field Repair (visual inspection, penetrant inspection recommended)
  • HC-SL-61-277: Governor – Installation of Hartzell Propeller Inc. Governors
  • HC-SL-61-265: Propeller – Smooth Forge Hub (three-bladed compact hubs)
  • HC-SL-61-254: Propeller – Propeller Operating Restrictions (ground idle RPM checks)
  • HC-SL-61-241: Propeller – New Blade Seal (B-7726 seal, C-3317-045 O-ring for D/E shank blades)
  • HC-SL-61-231: Propellers – Use of Propeller Jack (inspection after improper use)
  • HC-SL-61-225: Spinners – Spinner Dome and Bulkhead Assembly Manufacturing Process Improvements
  • HC-SL-61-187: Propeller – Alternate Lubrication Fittings (45 and 65 degree fittings)
  • HC-SL-61-185: Tachometers (importance of calibration)
  • HC-SL-61-171: Propellers – Spinners – Dome and Bulkhead Interchangeability
  • HC-SL-61-165: Propeller – Abnormal Vibration or Grease Leakage (inspection procedures)
  • HC-SL-61-61Y: Overhaul Periods and Service Life Limits for Hartzell Propeller Inc. Aviation Components
  • HC-SL-61-48A: Propeller – Diaphragm Inspection (for hydro-selective propeller models)
• De-ice and Anti-ice Service Letters:
  • HC-SL-30-369: Erosion Tape Installation on Blades with De-ice Boots
  • HC-SL-30-335: De-ice: Restrainer Strap Installation
  • HC-SL-30-308: De-ice: Hartzell Propeller Inc. PMA De-ice Components
  • HC-SL-30-295: De-ice: Hartzell De-ice Wire Harness and De-ice Boot for Pilatus PC-12
  • HC-SL-30-279: De-ice: Hartzell De-ice Boots and De-ice Kits
  • HC-SL-30-260: De-ice Boots, Anti-icing Boots, and Airframe Mounted Ice Protection System Components
  • HC-SL-30-259: Propeller – Hartzell Propeller Inc. Mounted Ice Protection Components
  • HC-SL-30-246: De-Ice – Spare Parts Release (for Raytheon 58 Baron)

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• Obsolete Service Letters:
  • Includes numerous historical service letters from numbers 1 through 218, many incorporated into later manuals or superseded by newer documents.

This PDF is an essential resource for owners, operators, and maintenance technicians working with Hartzell propellers. It compiles decades of service information, including critical safety directives, inspection procedures, overhaul intervals, parts replacements, and detailed technical modifications. The June 2023 index allows users to quickly locate specific service letters by number or subject. The collection includes active documents on blade damage evaluation, governor installation, lubrication practices, corrosion prevention, and overhaul scheduling.

Whether you need to verify a torque value, understand a service bulletin, or find the correct procedure for a specific propeller model, this collection provides the authoritative information directly from the manufacturer. It is organized with a detailed index and includes numerous technical figures, tables, and cross-references.

This complete service letter collection is delivered as a convenient, searchable PDF. It is instantly accessible on any device and printable for use in the workshop. Having this comprehensive reference ensures that maintenance and repairs are performed to the latest Hartzell standards, promoting safety and airworthiness.