# STCs that may be installed: N589S A list on [N589S](https://openairdocs.org/aircraft/N589S.md). Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do. In force first, then newest. - [STC SH3319NM](https://openairdocs.org/stc/SH3319NM.md): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system, · Precise Flight Inc - [STC SR04549AT](https://openairdocs.org/stc/SR04549AT.md): Conversion of the Pratt & Whitney PT6T-3 to the PT6T-3B configuration · Centerpointe Aerospace - [STC SA5783NM](https://openairdocs.org/stc/SA5783NM.md): Fabrication of Onboard Systems Model 7 CROPHAWK spray flow measuring system. · Onboard Systems International - [STC SH5780NM](https://openairdocs.org/stc/SH5780NM.md): Fabrication of Onboard Systems model E-46 cargo hook load weigh system. · Onboard Systems International - [STC SR02704SE](https://openairdocs.org/stc/SR02704SE.md): Installation and maintenance of the Sunspot 36 and 46 series lights · AeroLED's Holdings LLC - [STC SR04483CH](https://openairdocs.org/stc/SR04483CH.md): Installation of NASI NREM18M Air Conditioning Module · National Aircraft Service Inc. (NASI) - [STC SR00359BO](https://openairdocs.org/stc/SR00359BO.md): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. · Whelen Aerospace Technologies - [STC SR02394AK](https://openairdocs.org/stc/SR02394AK.md): Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system · Seaplanes North LLC - [STC SR03310CH](https://openairdocs.org/stc/SR03310CH.md): Installation of NASI Air Conditioning Module · National Aircraft Service Inc - [STC SA2693NM](https://openairdocs.org/stc/SA2693NM.md): Installation of Electronics International digital volt/amp gauges and accessories. · Electronics International Inc. - [STC SR00889CH](https://openairdocs.org/stc/SR00889CH.md): Reduction of standard passenger seating from sixteen to nine seats or less. · Construction Helicopters, Inc - [STC SR00042SE](https://openairdocs.org/stc/SR00042SE.md): Modification to allow the use of Configuration II aircraft performance limits. · Glacier Helicopter Inc - [STC SA1626NM PAGE 2](https://openairdocs.org/stc/SA1626NM%20PAGE%202.md): Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series) · Electronics International - [STC SH2212NM](https://openairdocs.org/stc/SH2212NM.md): Installation of Silver Instruments Fueltron IIIPT-IGS, IIIPT-IPS, IIIPT-ILS, IIIPT-IKS digital fuel flow indicating system. · Arnav Systems Inc - [STC SH4570NM](https://openairdocs.org/stc/SH4570NM.md): Approval for takeoffs and landings up to and including 12,000 feet density altitude is authorized. · Air One Helicopters, Inc - [STC SA4302NM](https://openairdocs.org/stc/SA4302NM.md): Installation of Electronics Int'l digital automatic engine analyzer. · Electronics International - [STC SH4539NM](https://openairdocs.org/stc/SH4539NM.md): Establish a nine passenger seat configuration. · Air One Helicopters, Inc - [STC SH4507NM](https://openairdocs.org/stc/SH4507NM.md): Approval for takeoffs and landings up to and including 12,000 feet densiy altitude is authorized. · Los Angeles County Sheriff's Department Aero Bureau - [STC SH4477NM](https://openairdocs.org/stc/SH4477NM.md): Installation of FC/FT-10 digital fuel flow indicating system. · Arnav Systems, Inc - [STC SH2572NM](https://openairdocs.org/stc/SH2572NM.md): Increased takeoff and landing density altitude limit. · North American Heli Svc Inc - [STC SH453NW](https://openairdocs.org/stc/SH453NW.md): Installation of an electronic weighing system (for monitoring cargo weight) · Measurement Systems Intl - [STC SH268WE](https://openairdocs.org/stc/SH268WE.md): Installation of stainless steel fire shields around aluminum engine mount fittings (P/N S1620-61435) of HSS, HUS, H-34 military series helicopters. (S-58 SERIES Military versions HSS, HUS, H-34) · TBM, Inc · Lists S-58 Series - [STC SA77GL](https://openairdocs.org/stc/SA77GL.md): Installation of Bendix weather radar RDR-1200. · Chicago Heli Airways Inc - [STC SH3NE](https://openairdocs.org/stc/SH3NE.md): Norton AC3093K radome installation and Bendix RDR 110 radar system installation. · Oxford Avionics, Inc - [STC SE01624WI](https://openairdocs.org/stc/SE01624WI.md): Conversion of Pratt & Whitney Canada, Model PT6A-60A to a North Star Aviation PT6A-60AG turboprop engine. Data required: 1. A copy of this certificate 2. North Star Aviation document, NSA No. 1200, Turboprop Engine Conversion of PT6A-60A Model to PT6A-60AG Configuration per FAA Approved STC, dated March 15, 2011, or later FAA approved revision 3. The ICA supplement for North Star Aviation PT6A-60AG models, Instructions for Continued Airworthiness, NSA No. 1200-ICA, Rev NC, dated March 9, 2011 or later applicable revision. · North Star Aviation Inc. - [STC SE00014EN](https://openairdocs.org/stc/SE00014EN.md): Installation of the Pratt & Whitney Engine Services, Inc. CrossCheck Engine Monitor Kit P/N HUMS-K-071-1, Rev. A on the specified PT6A engine models and kit P/N HUMS-K-071-2 on the specified A250 engine models. · Pratt & Whitney Engine Services Inc. - [STC SE00020EN](https://openairdocs.org/stc/SE00020EN.md): Installation of the Pratt & Whitney Engine Services, Inc. TrendCheck/ TrendCheck Plus Engine Monitor Kit P/N TREND-K-010-1 · Pratt & Whitney Engine Services Inc. - [STC SE01805NY](https://openairdocs.org/stc/SE01805NY.md): Installation of Fuel Nozzle Adapters using studs and nuts. · Atlantic Turbines International Inc. - [STC SE09257SC](https://openairdocs.org/stc/SE09257SC.md): Convert P&W Engine Models PT6A-15AG, -27, and -28, into PT6A-34 configuration. · Covington Aircraft Engines, Inc. - [STC SE659NE](https://openairdocs.org/stc/SE659NE.md): Installation of oil tank filler neck check valve, P/N TSA-76A. · Aviation Components Support ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT m.matched_by, s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model FROM ( SELECT stc_number, min(side) AS side, arg_min(matched_by, side) AS matched_by, arg_min(matched_model, side) AS matched_model FROM (SELECT stc_number, 1 AS side, 'airframe' AS matched_by, matched_model FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_stc.parquet' WHERE aircraft_model_code = '8141807' UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '51999') GROUP BY stc_number ) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number) ORDER BY m.side, s.status = 'Current' DESC, s.status_date DESC, s.stc_number ``` This list as a web page: https://openairdocs.org/aircraft/N589S/stcs --- 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.