# STC SA5232NM - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Sierra Industries Ltd., United States - Description: Intallation of D.C. converter. - Applied: September 16, 1991 - Status date: July 31, 2017 - Product: Aircraft, Small Airplane - Certification basis: Part 21, Part 25 - Data sheets: [TCDS A22CE](https://openairdocs.org/tcds/A22CE) - Certificate PDF: https://openairdocs.org/files/sha256/ee/2d/ee2dd452117d691a7a057d8c0510a3f6469f5a85038f80b505cc5ba46d74bae3 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4A00DF0132717FE586258721004C9793.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA5232NM ## ADs that name it (0) None. ## Approved models (2) - Textron Aviation Inc. 550 ([TCDS A22CE](https://openairdocs.org/tcds/A22CE)) - Textron Aviation Inc. 560 ([TCDS A22CE](https://openairdocs.org/tcds/A22CE)) ## 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 (5/14) Page 1 of 3 Reissued on July 31, 2017 to supersede the original STC, which has been lost or misplaced. Number: SA5232NM Part 25 of the Federal Aviation Regulations. Original Product – Type Certificate Number: A22CE Make: Cessna Model: 550/560 Installation of D.C. converter in accordance with Branson installation drawing 90B041, Revision N/C, FAA approved October 31, 1991, or later FAA approved revision. Date of Application: September 16, 1991 Date Reissued: 12/24/97; 9/8/05; 7/31/17 Date of Issuance: October 31, 1997 Date Amended: Signature Title Jim Grigg Manager, Fort Worth A CO Branch, Compliance & Airworthiness Division Sierra Industries, Ltd. 122 Howard Langford Drive Uvalde, TX 78801 FAA Form 8110-2 (5/14) Page 2 of 3 Transfer the ownership of Supplemental Type Certificate Number: SA5232NM To (Name and address of transferee) From (Name and address of grantor) United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA5232NM FAA Form 8110-2 (5/14) Page 3 of 3 Date of Issuance: October 31, 1997 Date of Reissuance: July 31, 2017 1. This approval is for installation of the D.C. converter only. Any appliances attached to the converter must be separately approved. 2. This approval should not be extended to aircraft 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, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. 3. A copy of this Certificate and Continuation Sheet, dated October 31, 1991, or later FAA approved revision, must be maintained as part of the permanent records for the modified aircraft. 4. 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. -END- United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA5232NM FAA Form 8110-2 (5/14) Page 4 of 3 ## Every issue (2) - July 31, 2017: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/ee/2d/ee2dd452117d691a7a057d8c0510a3f6469f5a85038f80b505cc5ba46d74bae3) - September 8, 2005: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/31/51/3151038d6afa7a0f4040091fc2a855b39233ece0039b9295b6f5ab304c0be968) --- 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.