# STC SA1112NW - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Machen Inc, United States - Description: Installation of a cabin heat boost pump fan - Applied: August 8, 1980 - Status date: November 27, 2001 - Product: Aircraft, Single-Engine - Certification basis: Part 3, Part 21 - Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15) - Certificate PDF: https://openairdocs.org/files/sha256/be/a8/bea848fb480731155e38f190f28df57a5c0b96705c971b2d6ac9e97b410562cd - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3725997309F24FC785256CC10080DE31.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA1112NW ## ADs that name it (0) None. ## Approved models (2) - Hawker Beechcraft Corporation 36 ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Hawker Beechcraft Corporation A36 ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) ## 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. Number SA1112NW This certificate, issued to Machen, Inc. 10555 Airport Drive Coeur d'Alene Airport Hayden Lake, ID 83835 Part 3 of the Civil Air Regulations. Original ProductType Certificate Number: 3A15 Make: Beech Model: 36 and A36 Description of the Type Design Change: Installation of a cabin heat boost pump fan, in accordance with Machen, Inc., Drawing No. 80-10001 and Installation Instruction Report No. 80-1. Limitations and Conditions: Approval of this change in type design applies to the above model aircraft only. This approval should not be extended to other aircraft of these models on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate must be maintained as part of the permanent records for the modified 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. This certificate and the supporting data which is the ba sis for approval shall remain in effect until surrendered, suspended, revoked, or a termination date is otherwise established by the Administrator of the Federal Aviation Administration. Date of application: August 8, 1980 Date reissued: November 27, 2001 Date of issuance: December 4, 1980 Date amended: 10/25/01 (Signature) Acting Manager, Seattle Aircraft Certification Office (Title) ## Every issue (1) - November 27, 2001: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/be/a8/bea848fb480731155e38f190f28df57a5c0b96705c971b2d6ac9e97b410562cd) --- 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.