# STC SA1252SO - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Gulfstream Aerospace Corporation, United States - Description: Installation of Collins LRN-85 VLF/Omega navigation system. - Applied: May 12, 1981 - Status date: November 15, 1982 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 25 - Data sheets: [TCDS A12EA](https://openairdocs.org/tcds/A12EA) - Certificate PDF: https://openairdocs.org/files/sha256/2a/f0/2af0f247acfa18a06a7ee57ab17a1718d29c0ed0fdbb5376a7b3ddef6d1fa062 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178041153720240119150432.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA1252SO ## ADs that name it (0) None. ## Approved models (1) - Gulfstream Aerospace Corporation G-1159A ([TCDS A12EA](https://openairdocs.org/tcds/A12EA)) ## 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. Ðepermmt of @rsnsporrsrion -Jfltdnsl gbisrion gdminisnsdon Fupplemsntsl 1[Ups €ertiflcsts /fárrb sAlzs2so 91,a..,^rrZ:"-t*, ¿u,¿zha F i¿ : t ili.T, å;. o t o u c e C o r p o r a t i o n Savannah, Georgia 31402 2b.y',-**"r'.r'f.¿t{-"-r"'-*"ø-¿---r"""¿(r.¿¿r*lrr*trr--A4Ø* 25 y'á-Federal AviatÍon g?-á¿b,ø A,r,a-l Ø^"2-z -ÇV-6.,-a4"-al6^1,. A1 2 EA .z/á'b' Gul fstream -/&/, G-11594 Ø-" /,tb*,43t¡-Ø-*"6,L.u.. InstalIation of CoI'lins LRN-B5 Vlt/Omega NavigationSystem in acc-ordancdwith G"ulfstream American Corporation Drawing List DL 71, 11260I dated May 12, 1981, or later FAA approved revision. -1"-,n¿-,*-."/6--1,¿-*,This approval should not be extended to other spec'ificairp'lanes of this model on which other previously approved modifications are incorporated, uniess it is determined that the interrelationship between this change and any of those other prevíously approved modifjcations will introduce no adverse effect upon the airworthiness of that ajrp'lane. Airp'lane Flight Manual Supplement 71, 172607-04 ciated Juiy 14,1981, or later FAA approved revisìon is a requined part of this installation. ,%a'..^d;/.-ø,.."2:/-z.r7rV-"L71-a.-,4r./r,rz,zb,fu,,z,þ-7yrr"-hrÇ//^"-r-r;-,;rr.fi.l,r-rrr/zrr - zø&e4uay'zz&4zzuw4zy',a*.a.bz-rntnzh;ezu/zlc'.2-úlz,ra-2z