# STC SA1731SW - Type: Supplemental type certificate - Status: Current, Reissued - Holder: The NORDAM Group LLC, United States - Description: Installation of engine thrust reversers. - Applied: June 19, 1973 - Status date: April 1, 2019 - Product: Aircraft, Large Airplane - Certification basis: Part 3, Part 21 - Data sheets: [TCDS A5CE](https://openairdocs.org/tcds/A5CE) - Certificate PDF: https://openairdocs.org/files/sha256/5f/98/5f98a067f359c7ad5dd9fc234945a63595ec805bb371381c73f95fabd3e08b42 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/72B67A7252DCC141862586C0007127CE.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA1731SW ## ADs that name it (1) - [AD 2005-23-06](https://openairdocs.org/ad/2005-23-06): Thrust reverser hydraulic system ยท Engine thrust reversers (NORDAM Group STC SA1669SW or 2 others). Effective Dec 19, 2005. Named in the applicability ## Approved models (1) - Learjet Inc. 23 ([TCDS A5CE](https://openairdocs.org/tcds/A5CE)) ## 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 Page 1 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA1731SW The NORDAM Group LLC 6910 N. Whirlpool Tulsa, OK 74117 Part 3* the Civil Air Regulations A5CE Learjet Inc. 23 Installation of engine thrust reversers in accordance with The Dee Howard Company Drawing List No. 25-0673-000 dated September 12, 1973, or later FAA approved revision. (See continuation sheet 3 of 4) June 19, 1973 7/26/99; 10/24/03; 4/1/19 September 18, 1973 9/22/76; 4/28/78; 7/12/78; 11/14/78 Rev. 4 Jim Grigg Manager, Fort Worth ACO Branch, Compliance & Airworthiness Division Aircraft Certification Service 4 FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 2 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA1731SW 4 FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page ___ of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: Date of Issuance: September 18, 1973 Date Amended: November 14, 1978 Date of Reissuance: April 1, 2019 *as noted on Type Certificate Data Sheet No. A5CE for the model listed below plus the requirements specified in ASW-210 letter to AFS-100 dated Sept. 14, 1973. FAA Approved Airplane Flight Manual Supplement dated September 18, 1973, with revisions in accordance with the following is required: AFM Revision Service Letter Incorporated Date C 2/9/77 SL25-6 E 7/12/78 SL25-6 and SB25-17 F 11/6/78 Thrust Reverser Service Bulletin and/or Kit No. 701, 703 thru 713, 714 thru 718 701, 703 thru 713, 714 thru 718 701, 703 thru 713, 714 thru 718 720 E 7/12/78 720 SB25-17 F 11/6/78 721 and subsequent F 11/6/78 See Airplane Flight Manual Supplement for additional limitations. Installations are limited to those made by The Dee Howard Company and The Gates Learjet Corporation. Revision SA1731SW 3 4 FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page ___ of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA1731SW Date of Issuance: September 18, 1973 Date Amended: November 14, 1978 Date of Reissuance: April 1, 2019 Aircraft weight and balance required after installation is completed. The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission. -END- ## Every issue (2) - April 1, 2019: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/5f/98/5f98a067f359c7ad5dd9fc234945a63595ec805bb371381c73f95fabd3e08b42) - October 24, 2003: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/0b/eb/0beb2f1ea6c48f64364fa7f09d0e9b0b8fa19a5c0f851c40fdeb3e3d26619153) --- From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.