# STC SA04320CH - Type: Supplemental type certificate - Status: Current, Amended - Holder: Hartzell Propeller Inc, United States - Description: Installation of Hartzell propeller models HC-C2YR-1N/NG8301-3 and HC-C3YlR-lN/NG8301-5 - Applied: February 13, 2018 - Status date: September 13, 2018 - Product: Aircraft, Small Airplane - Certification basis: Part 21 - Data sheets: [TCDS 3A23](https://openairdocs.org/tcds/3A23) - Certificate PDF: https://openairdocs.org/files/sha256/a0/d8/a0d89ad034fec33b92504ee2d8a8709f3bb18202aa2c1c301799b99814842762 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E356AF8EBCF52D9E8625830E004F2EDC.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA04320CH ## ADs that name it (0) None. ## Approved models (9) - Maule Aerospace Technology Inc. M-5-235C ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. M-6-235 ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. M-7-235 ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. M-7-235A ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. M-7-235B ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. M-7-235C ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. M-8-235 ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. MT-7-235 ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) - Maule Aerospace Technology Inc. MX-7-235 ([TCDS 3A23](https://openairdocs.org/tcds/3A23)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. AVIATION United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA04320CH This certificate issued to: Hartzell Propeller Inc One Propeller Place Piqua, Ohio 45356 Part CAR of the Federal Aviation Regulations. Original Product - Type Certificate Number: Make: MAULE AEROSPACE TECHNOLOGY, INC. ЗА23 Model: M-5-235C, M-6-235, M-7-235, M-7-235A, M-7-235B, M-7-235C, MX-7-235, MT-7-235, M-8-235 Description of Type Design Change: Installation of Hartzell propeller models HC-C2YR-1N/NG8301-3 and HC-C3Y1R-1N/NG8301-5 in accordance with Hartzell STC Installation Instruction INST-010918 (Revision A) dated August 17, 2018 or later FAA Approved revisions. Airplane Flight Manual Supplement AFMS-010918 (Initial Revision) dated June 28, 2018 is required. Instructions for Continued Airworthiness ICA-010918 (Initial Revision) dated June 21, 2018 are applicable. 1. The installer must determine whether this change is compatible with previously approved modifications. 2. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission. (See Continuation Sheet 3 of 3 pages) Date of Application: 2/13/2018 Date Reissued: Date of Issuance: 7/17/2018 Date Amended: 9/13/18 By Direction of the Administrator Signature 13-21 Title Brian E. Meyer STC ODA administrator Hartzell ODA-100082-CE The ST's supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is the property of the STC holder. FAA Form 8110-2 (8/13) Page 1 *FEDERAT AVIATION United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA04320CH Hartzell Propeller Inc Date of amendment: September 13, 2018 Limitations and Conditions: continued: 3. Revised Type Certificate Data Sheet information: Propeller and Propeller Limits: HARTZELL Constant speed HC-C2YR-1N/NG8301-3 (2-blade) Diameter: not over 80.0 inches, not under 80.0 inches Pitch setting at 30-inch radius: Low: 15.1+/-0.2 degrees High: 31.0+/-1.0 degrees Spinner model: Hartzell A-2298-2(P) Propeller and Propeller Limits: HARTZELL Constant speed HC-C3Y1R-1N/NG8301-5 (3-blade) Diameter: not over 80.0 inches, not under 80.0 inches Pitch setting at 30-inch radius: Low: 12.3+/-0.2 degrees High: 27.0+/-1.0 degrees Spinner model: Hartzell C-3575(-P) 4. Approved with Lycoming 0-540-J1A5D, 0-540-J3A5, IO-540-W1A5D, and IO-540-W1A5 engines (2400 RPM) only . 5. 7:00 or larger tires are required per Note 14 of aircraft Type Certificate Data Sheet 3A23. 6. This STC retains compatibility with the float and ski models listed in Aircraft Type Certificate Data Sheet 3A23 when Hartzell propeller models HC-C2YR-IN/NG8301-3 (2-blade) or HC-C3Y1R-1N/NG8301-5 (3-blade) are installed. Use of the 2-blade propeller in place of the Hartzell HC-C3YR-1RF/F7693F propeller will increase the takeoff distances approximately 5%. 7. This modification does not constitute an acoustical change per 21.93(b). 8. The original certification basis was used for this STC with the following exceptions: 14 CFR 23.907 amendment 23-59, 23.1529 amendment 23-26. 9. The STC amendment of September 13, 2018 did not require a change to the STC ICA or maintenance instructions. END The ST's supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is the property of the STC holder. FAA Form 8110-2 (8/13) Page 3 ## Every issue (2) - September 13, 2018: Amended, Current. [certificate](https://openairdocs.org/files/sha256/a0/d8/a0d89ad034fec33b92504ee2d8a8709f3bb18202aa2c1c301799b99814842762) - July 17, 2018: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/57/31/57313b19640a07a9315d721692644d2007247edb45c0080e0d3f23bd99057d53) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.