# STC SA1837SW - Type: Supplemental type certificate - Status: Current, Issued - Holder: Qualitron Aero, Inc, United States - Description: Seat modification. - Applied: April 2, 1973 - Status date: October 3, 1974 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 21 - Data sheets: [TCDS A2SW](https://openairdocs.org/tcds/A2SW) - Certificate PDF: https://openairdocs.org/files/sha256/60/28/6028a2937ce5c88df3b14299e1243230d1470428a93c7a0835e30e50527124d5 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1AD24FCAD938D34985256CC10083D168.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA1837SW ## ADs that name it (0) None. ## Approved models (2) - Israel Aircraft Industries Ltd. 1121A ([TCDS A2SW](https://openairdocs.org/tcds/A2SW)) - Israel Aircraft Industries Ltd. 1121B ([TCDS A2SW](https://openairdocs.org/tcds/A2SW)) ## 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. Idnitrd $tatu of amtrira Btpartment of 'Cransportation — federal Halation administration Supplemental TCpe Certificate SA1837SW Project T26593W-S JLP-212 Qualitron Aero, Inc. 17795 John F. Kennedy Blvd. P 0. Box 60374 Houston, Texas 77060 ^JijS^dt6^y™&^£wf*>t£t>wiv^fawU^^ 'J/te&lfitd^^vv0^/trt4efo^i^jixrteT<&ifi£^w 4b ^^t* ClVll All ytt£a&end/. A2SW . Israel Industries, Ind. , 1121B Seat modification according to Drawing List 73T-6120-0300, Revision A, dated 9/23/74. .atfac&^.dte,^^ * April 2, 1973 October 3, 1974 ."<-• Don P. Watson Acting Chief, Engineering and Manufacturing Branch ~rrnie) ~ ~_ ^" 7 his certificate may be transferred in accordance with FAR 21.47. FAAFM* 81 1O-2 (10-48) INSTRUCTIONS: The transfer endorsemrnt below may be used to notify ihe appropriate FAA Regional Office of Ihc transk-r of ihis Supplemental Type Certificate. The FAA will reissue the certificate in the name of 'he transferee and forward il lo him. TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number . to (Name oj transferee) (Address of transferee) f Number and street) (C,fy, Matt, and 7JP from (Name of grantor) (Print or type) (Address of grantor) t Number and sltfft) (City,Statt, and ^IP code) Extent of Authority (if licensing agreement): Signature of grantor (In ink):_ C FAA AC CO-5538 ## Every issue (1) - October 3, 1974: Issued, Current. [certificate](https://openairdocs.org/files/sha256/60/28/6028a2937ce5c88df3b14299e1243230d1470428a93c7a0835e30e50527124d5) --- 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.