# STCs that may be installed: N58S

A list on [N58S](https://openairdocs.org/aircraft/N58S.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.

Page 1 of 2 · 82 STCs

- [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 SE12225AC](https://openairdocs.org/stc/SE12225AC.md): This STC will incorporate P&W 1700 rpm propeller reduction gearbox on P&WC engines to allow 1700 rpm propeller installation · High Cotton Aircraft Conversions, LLC · Lists PT6A-41
- [STC SE00010EN](https://openairdocs.org/stc/SE00010EN.md): Instructions for Continued Airworthiness for the PT6A-25, and, -25A engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals. · MORE Company Inc · Lists PT6A-25
- [STC SE000010EN](https://openairdocs.org/stc/SE000010EN.md): Instructions for Continued Airworthiness for the PT6A-25 and PT6A-25A engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals. · MORE Company, Inc. · Lists PT6A-25
- [STC SE000011EN](https://openairdocs.org/stc/SE000011EN.md): Instructions for Continued Airworthiness for the PT6A-25C engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals. · MORE Company, Inc. · Lists PT6A-25C
- [STC SE00001EN](https://openairdocs.org/stc/SE00001EN.md): Engines will be maintained IAW 'Maintenance or Reliable Engines(MORE) Program,' Rev 2, 8/16/95. · MORE Company Inc · Lists PT6A-38
- [STC SE00002EN](https://openairdocs.org/stc/SE00002EN.md): Instructions for Continued Airworthiness for the PT6A-34, -34AG, -34B, -36, -114, -114A, -116, -135, and -135A engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals. · MORE Company Inc · Lists PT6A-114
- [STC SE00003EN](https://openairdocs.org/stc/SE00003EN.md): Instructions for Continued Airworthiness for the PT6A-6/C20, -20, -20A and, -20B engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals. · MORE Company Inc · Lists PT6A-20
- [STC SE00004EN](https://openairdocs.org/stc/SE00004EN.md): Instructions for Continued Airworthiness for the PT6A-11, -11AG, -15AG, -110 and-112 engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals. · MORE Company Inc · Lists PT6A-11
- [STC SE00006EN](https://openairdocs.org/stc/SE00006EN.md): Instructions for Continued Airworthiness for the PT6A-45A, -45B, and, -45R engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals. · MORE Company Inc · Lists PT6A-45A
- [STC SE00011EN](https://openairdocs.org/stc/SE00011EN.md): Instructions for Continued Airworthiness for the PT6A-25C engine model that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals. · MORE Company Inc · Lists PT6A-25C
- [STC SE000EN](https://openairdocs.org/stc/SE000EN.md): Engines will be maintained IAW 'Maintenance or Reliable Engines(MORE) Program,' Rev 4, dated 8/16/95. · MORE Company Inc · Lists PT6A-21
- [STC SE10947SC](https://openairdocs.org/stc/SE10947SC.md): The conversion of the Pratt & Whitney Canada, Model PT6A-21 to a PT6A-28 turboprop engine · Prime Turbines · Lists PT6A-21
- [STC SE00482SE](https://openairdocs.org/stc/SE00482SE.md): Incorporation of turbine engine into a twin power section turboprop assembly. · Fifty-Ten-Yankee LLC · Lists PT6A-114A
- [STC SE10552SC](https://openairdocs.org/stc/SE10552SC.md): Conversion of Pratt & Whitney Canada Corp. Model PT6A-27 or -28 to a Model PT6A-34 turboprop engine. · Prime Turbines LLC · Lists PT6A-27
- [STC SE11139SC](https://openairdocs.org/stc/SE11139SC.md): The conversion of the Pratt & Whitney Canada, Model PT6A-135 to a PT6A-135A turboprop engine · Airforce Turbine Service · Lists PT6A-135
- [STC SE11141SC](https://openairdocs.org/stc/SE11141SC.md): The conversion of the Pratt & Whitney Canada, Model PT6A-15AG to a PT6A-34AG turboprop engine · RT Turbines Inc · Lists PT6A-15AG
- [STC SE02170AT](https://openairdocs.org/stc/SE02170AT.md): Installation of Pc Safety Valve Kit · Bell Helicopter Textron Inc. · Lists PT6A-27
- [STC SE11095SC](https://openairdocs.org/stc/SE11095SC.md): The conversion of the Pratt & Whitney Canada, Model PT6A-27 to a PT6A-34 turboprop engine · R.T. Turbines, Inc. · Lists PT6A-27
- [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. · Lists PT6A-60A
- [STC SE02837NY](https://openairdocs.org/stc/SE02837NY.md): The conversion of the Pratt & Whitney Canada PT6A-21 engine to operate as a PT6A-28 engine to be done. · Rocky Mountain Aircraft · Lists PT6A-21
- [STC SE02688NY](https://openairdocs.org/stc/SE02688NY.md): This modification would incorporate improved compressor components into the Pratt & Whitney PT6A-28 engine from the PT6A-135A engine. · Standard Aero Limited · Lists PT6A-28
- [STC SE02290NY](https://openairdocs.org/stc/SE02290NY.md): Conversion of a Pratt & Whitney Canada PT6A-21 engine to operate as a PT6A-27 or -28 engine · Vector Aerospace Engine Services Atlantic Inc. · Lists PT6A-21
- [STC SE02501NY](https://openairdocs.org/stc/SE02501NY.md): Conversion of the PT6A-11 engine · Vector Aerospace Engine Services Atlantic Inc. · Lists PT6A-11
- [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. · Lists PT6A-11
- [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. · Lists PT6A-11
- [STC SE8652SW](https://openairdocs.org/stc/SE8652SW.md): Installation of a flexible hose from the Propeller Primary Governor to the Fuel Control Unit. · Air Tractor Inc · Lists PT6A-45R

Next page: https://openairdocs.org/aircraft/N58S/stcs.md?page=2

## 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 = '52033')
  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/N58S/stcs

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