# STC SH322NW - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Siam Hiller Holdings Inc - Description: Installation of a Bendix fuel control/power governor system on the Allison 250-C20 turbine powered Hiller UH-12E rotorcraft. (UH-12E modified per STC SH178WE) - Status date: August 19, 2005 - Data sheets: 4H11 - Certificate PDF: https://openairdocs.org/files/sha256/0d/a0/0da05a104453e0670f04bef1554db8eb9df895a7e1815ee6a33a9bc55be0ec81 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/74C466C8038208A0862570D90060110A.0001 - Page: https://openairdocs.org/stc/SH322NW ## ADs that name it None. ## Approved models (1) - Rogerson Hiller Corporation UH-12E (TCDS 4H11) ## 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. This Certificate issued to Siam Hiller Holdings, Inc. 925 M Street Firebaugh, California 93622 Part 27 of the Federal Aviation Regulations. 4H11 Hiller UH-12E Description of Type Design Change: Installation of a Bendix fuel control/power governor system on the Allison 250-C20 Turbine Powered Hiller UH-12E rotorcraft in accordance with Detroit Diesel Allison Commercial Engine Bulletin 250-C20 CEB-1050 Revision 1, dated September 26, 1975, or later FAA approved revision. NOTE: Only those Hiller UH-12E rotorcraft which have been converted to turbine power in accordance with STC SH178WE, are eligible for this modification. Limitations and Conditions: Approval of this change in type design applies to the above model rotorcraft only. This approval should not be extended to other rotorcraft of this model on which other previously approved modifications 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 rotorcraft. A copy of this Certificate must be maintained as part of the permanent records for the modified rotorcraft. The limitations and conditions of Rotorcraft Type Certificate 4H11 and STC SH178WE apply except as outlined on page 3 of this STC. 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 basis 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: May 17, 1976 Date of issuance: July 9, 1976 Date reissued: 06/02/83; 10/25/84; 05/28/91; 11/30/95; 08/19/05 Date amended: 05/28/91 ( Signature) Manager, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office ( Title) Number SH322NW Limitations and Conditions: (Continued) The limitations and conditions described in STC SH178WE are applicable to this modification except as detained below: 1. Configuration a. The torque meter accumulator, Soloy P/N 560-7312, is not to be used with this Bendix fuel control/power governor installation. Perform this deletion and other required component changes in accordance with Soloy Engineering Order #3 of DWG. #560- 7300 Revision B or later FAA approved revision. b. The Bendix equipped Allison 250-C20 turbine engine is to be ship rigged and maintained in accordance with the appropriate portions of the Allison 250-C20 and Soloy Maintenance Manuals. 2. Inspection and Maintenance This fuel control and power governor assembly must be visually inspected prior to each flight as part of the normal rotorcraft preflight inspection procedure. - END - ## Every issue (1) - August 19, 2005: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/0d/a0/0da05a104453e0670f04bef1554db8eb9df895a7e1815ee6a33a9bc55be0ec81) --- From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.