# STC SA5796NM - Type: Supplemental type certificate - Status: Current, Reissued - Holder: BLR Aerospace LLC., United States - Description: Vortex generators IAW Document AA1113. - Applied: August 18, 1992 - Status date: August 23, 2018 - Product: Aircraft, Small Multi-Engine - Certification basis: Part 3, Part 21 - Data sheets: [TCDS A20SO](https://openairdocs.org/tcds/A20SO) - Certificate PDF: https://openairdocs.org/files/sha256/e7/7f/e77fe5dc3ab5a2c898e33da1d9869539bf4b0cd792e52861b2199df556f83efe - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/74E7316D013C9FBA862582F70063471B.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA5796NM ## ADs that name it (0) None. ## Approved models (1) - Piper Aircraft Inc. PA-31-350 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO)) ## 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. Un ited S tates of Am erica Department of Transportation - Federal Aviation Administration Supplemental Type Certificate Number SA5796NM This certificate, issued to BLR Aerospace, LLC 11002 29th Ave. West Everett, WA 98204 Part 3 of the Civil Air Regulations. Original ProductType Certificate Number: A20SO Make: Piper Model: PA-31-350 and T-1020 Description of the Type Design Change: Vortex generators manufactured in accordance with Document AA1113, Revision B, dated January 05, 1993, and installed in accordance with Document AA1114, Revision B, dated December 15, 1992, or later FAA-approved revisions. 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 this model 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 adver se effect upon the airworthiness of that aircraft. A copy of this certificate, continuation sheet, and the flight manual supplement (FMS) dated January 05, 1993, or later FAA-approved revision, must be maintained as part of the permanent records for the modified aircraft. (See Continuation Sheet on Page 3) Date of application: August 18, 1992 Date reissued: November 23, 2009; August 23, 2018 Date of issuance: December 9, 1992 Date amended: January 7, 1993 FAA FORM 8110-2 (5/14) PAGE 1 OF 3 PAGES By direction of the Administrator (Signature) Manager, Seattle ACO Branch (Title) Un ited S tates of Am erica Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA5796NM BLR Aerospace, LLC Issued: December 09, 1992 Reissued: November 23, 2009; August 23, 2018 Amended: January 07, 1993 This continuation sheet, which is part of STC SA5796NM, prescribes the conditions and limitations under which the product for which the STC was issued meets the standards for airworthiness of the Federal Aviation Regulations. The conditions and limitations of Type Certificate Data Sheet Number A20SO apply except where superseded by the following: The system consists of eighty-six vortex generators on the wing and vertical tail of the airplane and four strakes (two on each nacelle). There may be a maximum combined total of four vortex generators missing from the wing and/or vertical tail before replacements must be installed. If any of the eighty-six vortex generators are missing, the airplane must be operated within the limitations of the basic airplane flight manual until replacements are installed. Airspeed Indicator Normal operating range (green arc) .................................. 73 to 185 knots Markings (IAS): Flaps operating range (white arc) ...................................... 68 to 132 knots Minimum single-engine control speed (red radial) ............. 72 knots Maximum Weights: Ramp ....................................................... 7295 pounds Takeoff .................................................... 7250 pounds Landing.................................................... 7000 pounds CG Range (Landing +127.0 inches to +135.0 inches at ....... 7250 pounds Gear Extended): +126.0 inches to +135.0 inches at ....... 7000 pounds +122.0 inches to +135.0 inches at ....... 6200 pounds +120.0 inches to +135.0 inches at ....... 5200 pounds or less Straight line variation between points given Placards: Change all references to VMCA values on placards to 72 KIAS. - END - **FAA FORM 8110-2 (5/14) PAGE 3 OF 3 PAGES** ## Every issue (2) - August 23, 2018: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/e7/7f/e77fe5dc3ab5a2c898e33da1d9869539bf4b0cd792e52861b2199df556f83efe) - November 23, 2009: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/07/6a/076a4bc40ead699d30e37fb9d3638e8ae4d1730f42da93f8dcd78be72874a995) --- 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.