# STC SA3532NM - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Raisbeck Engineering Inc., United States - Description: Installation of Hartzell/Raisbeck Quiet Turbofan Propeller System. Suitable for DHC-6-300 airplanes with PT6A-27 engines. - Applied: March 11, 1986 - Status date: September 1, 2023 - Product: Aircraft, Small Airplane - Data sheets: [TCDS A9EA](https://openairdocs.org/tcds/A9EA) - Certificate PDF: https://openairdocs.org/files/sha256/52/53/525333caff58789226d888f018315df3bd567d9c36834e17d51b7d0b41e95c1e - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID109795866220231003163835.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA3532NM ## ADs that name it (1) - [AD 2005-18-20](https://openairdocs.org/ad/2005-18-20): "FASTprop" propeller de-icers · Hartzell PHC-C3YF-1RF/F8468A(B,K)-8R constant speed propeller (STC SA00718LA or 17 others). Effective Oct 14, 2005. Cited in the text ## Approved models (1) - Bombardier Inc. DHC-6-300 ([TCDS A9EA](https://openairdocs.org/tcds/A9EA)) ## What the certificate says Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record. FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: (See Continuation Sheet Page 3 of 3 Pages) Page 1 of 3 SA3532NM Raisbeck Engineering Inc. 2811 South 102nd Street, Suite 100 Tukwila, WA 98168 Part 3 the Civil Air Regulations A9EA DeHavilland DHC-6-300 Installation of Hartzell/Raisbeck Quiet Turbofan Propeller System in accordance with Raisbeck Engineering Drawing List 86-1500, Revision E, dated September 2, 1994, or latest FAA approved revision. This installation consists of Hartzell 4-bladed propellers and aluminum hubs with spinners and a propeller de-icing system. March 11, 1986 September 1, 2023 August 8, 1986 1/30/87; 1/18/90; 4/4/94; 11/3/94; 8/21/06 for Manager, West Certification Branch Data is suitable for reproduction and installation in all DeHavilland DHC-6-300 airplanes with PT6A-27, or PT6A-34 engines. The approval of this change in type design applies to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications, including changes in type design, are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission. FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: Page 2 of 3 SA3532NM FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: End Page 3 of 3 Limitations and Conditions: (cont’d) SA3532NM A copy of this Certificate and Raisbeck Engineering Drawing List 86-1500 shall be maintained as part of the permanent records of each modified aircraft. The FAA-approved Airplane Flight Manual Supplement, Revision E, dated September 1994, or later approved revision shall be attached to the Airplane Flight Manual for each modified aircraft. **LANDPLANES** The applicable propellers for this type of aircraft are: 2 Hartzell HC-D4N-3C hubs with Hartzell D9290K blade in pairs Intermediate floatation gear may be installed. **FLOATPLANES AND AMPHIBIAN FLOATPLANES** Installation of the Seafloats or the Amphibian Floats must be accomplished in accordance with Supplemental Type Certificate (STC) SA2CH. The applicable propellers for tis type of aircraft are: 2 Hartzell HC-D4N-3EYX1 hubs with Hartzell D9290K blade in pairs **LIMITATIONS** Applicable to landplanes, floatplanes and amphibian floatplanes: Propeller diameter 93 inches (Maximum); minimum allowable for repair 92.0 inches. No further reduction permitted. Pitch Settings: Low pitch 20.1 + 0.1 degrees Reverse -9.0 + 0.5 degrees Feathered +84 to +85 degrees Stabilized ground operation between 400 and 1100 propeller RPM prohibited. Operation between 0 and 400 propeller RPM is permissible only with the propeller feathered. In addition, the limitations specified in STC SA2CH for Floatplanes and Amphibian Floatplanes are also applicable. ## Every issue (2) - September 1, 2023: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/52/53/525333caff58789226d888f018315df3bd567d9c36834e17d51b7d0b41e95c1e) - August 21, 2006: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/04/56/04561e32cf3547a9d4939d82aef8b00d3305ff3765e0655e1972266e826995b3) --- 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.