# STCs that may be installed: Bell 47B A list on [Bell 47B](https://openairdocs.org/model/bell-47b.md). In force first, then newest. The registry doesn’t record which STCs an aircraft has. Page 1 of 2 · 100 STCs - [STC SA800EA](https://openairdocs.org/stc/SA800EA.md): Installation of Whelen Anti-Collision, Position, or Anti-Collision/Position Light System, and applicable associated power supplies · Whelen Aerospace Technologies - [STC SA5581SW](https://openairdocs.org/stc/SA5581SW.md): Installation of ALCOR true-flow/ totalizer system · Alcor LLC · Lists 47 Series - [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 SR09066RC](https://openairdocs.org/stc/SR09066RC.md): Fabricate the HAC-47-3 Tail Rotor Blade. · Scott's-Bell 47 Inc - [STC SR02704SE](https://openairdocs.org/stc/SR02704SE.md): Installation and maintenance of the Sunspot 36 and 46 series lights · AeroLED's Holdings LLC - [STC SA02268CH](https://openairdocs.org/stc/SA02268CH.md): Installation of Airwolf Filter Corp. Air Oil Separator · Airwolf Filter Corporation - [STC SA615EA](https://openairdocs.org/stc/SA615EA.md): Installation of a Whelen Anti-Collision Strobe Light System as replacement for originally installed anti-collision lights. · Whelen Aerospace Technologies - [STC SR00359BO](https://openairdocs.org/stc/SR00359BO.md): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. · Whelen Aerospace Technologies - [STC SR00408NY](https://openairdocs.org/stc/SR00408NY.md): Installation of Airwolf remote mounted engine oil filter model AFC-600. · Airwolf Filter Corporation - [STC SR02487AK](https://openairdocs.org/stc/SR02487AK.md): Installation of L-3 Communications Avionics Systems ESI-500 Standby Instrument System · ADS-B Technologies, LLC - [STC SR02470AK](https://openairdocs.org/stc/SR02470AK.md): Installation of the L-3 Communications NGT -1000/2000/2500 ADS-B System · ADS-B Technologies, LLC - [STC SR02471AK](https://openairdocs.org/stc/SR02471AK.md): Installation of the L-3 Communications NGT -9000/9000R ADS-B System · ADS-B Technologies, LLC - [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 SH382SW](https://openairdocs.org/stc/SH382SW.md): Eligible only on Bell 47 series with open tail booms. Installation of sign per Kitz Kopter's Drawing KK-101 dated 10/14/64. · Scott's Bell 47 Inc - [STC SR09321RC](https://openairdocs.org/stc/SR09321RC.md): Installation of Improved Main Rotor Grips and Matching Adapter Nut · Scott's Bell 47 Inc - [STC SR09341RC](https://openairdocs.org/stc/SR09341RC.md): Installation of the main rotor grips with integral drag brace clevis, new drag brace, and matching adapter nut for wood blade configurations · Scott's Bell 47 Inc - [STC SA00068SE](https://openairdocs.org/stc/SA00068SE.md): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1) · Electronics International Inc. - [STC SA2693NM](https://openairdocs.org/stc/SA2693NM.md): Installation of Electronics International digital volt/amp gauges and accessories. · Electronics International Inc. - [STC SA4172NM](https://openairdocs.org/stc/SA4172NM.md): Installation of Aviation Development oil filter. · Aviation Development Corporation - [STC SA02033AT](https://openairdocs.org/stc/SA02033AT.md): Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line. · M-20 Oil Separators LLC - [STC SA00680SE](https://openairdocs.org/stc/SA00680SE.md): Installation of Electronics International model UBG-16 or UBG-16T bar graph engine analyzer. · Electronics International - [STC SA489EA](https://openairdocs.org/stc/SA489EA.md): Installation of ARP Inc. carburetor ice detection system · Aircraft & Rotorcraft Products (ARP) Inc - [STC SA02520AT](https://openairdocs.org/stc/SA02520AT.md): Installation of M-20 Oil Separator, model 600-WP. · M-20 Oil Separators LLC - [STC SA2687NM](https://openairdocs.org/stc/SA2687NM.md): Installation of Truboplus/ Electronics Int'l gauges and switches. · Aero Manufacturing Inc. - [STC SA1626NM PAGE 1](https://openairdocs.org/stc/SA1626NM%20PAGE%201.md): Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series) · Electronics International - [STC SA2844CE](https://openairdocs.org/stc/SA2844CE.md): Installation of a plastic cap enclosure over the anti-collision strobe light system. · Air Transport Inc - [STC SA2350NM PAGE 1](https://openairdocs.org/stc/SA2350NM%20PAGE%201.md): Installation of Electronics International Inc digital carburetor/outside air temperature gauges · Electronics International - [STC SA4302NM](https://openairdocs.org/stc/SA4302NM.md): Installation of Electronics Int'l digital automatic engine analyzer. · Electronics International - [STC SA3862NM PAGE 1](https://openairdocs.org/stc/SA3862NM%20PAGE%201.md): Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories. · Electronics International - [STC SA4173NM](https://openairdocs.org/stc/SA4173NM.md): Installation of Simplex Model 7600 modular electrical system. (47G-5 WITH 12 VOLT SYSTEM) · Simplex Manufacturing Company · Lists 47 Series - [STC SH4173NM](https://openairdocs.org/stc/SH4173NM.md): Installation of Simplex Model 7600 modular electrical system. (US ARMY OH-13E M74A) · Simplex Manufacturing Company - [STC SH2945NM](https://openairdocs.org/stc/SH2945NM.md): Addition of a twist grip on the cyclic pitch stick to provide hand operated yaw control · Narad James L - [STC SH3351NM](https://openairdocs.org/stc/SH3351NM.md): Addition of a twist grip on the cyclic pitch stick to provide a hand operated yaw control. · Narad James L · Lists 47 Series - [STC SA2190NM PAGE 1](https://openairdocs.org/stc/SA2190NM%20PAGE%201.md): Installation of electronics International Digital Volt/Amp Gauges and Accessories. · Electronics International - [STC SH506GL](https://openairdocs.org/stc/SH506GL.md): Installation of modified tail rotor gearbox using original installation hardware and components. · Helicopters, Inc - [STC SH25SW](https://openairdocs.org/stc/SH25SW.md): Transceivers KY90, KY90E, KY90H, KY95, KY95E, and KY95H. · Honeywell International Inc · Lists 47 Series - [STC SH828NW](https://openairdocs.org/stc/SH828NW.md): Installation of weighing system. (AS MODIFIED BY STC SH657NW) · Onboard Weighing Systems - [STC SH2840SW](https://openairdocs.org/stc/SH2840SW.md): Chemical spray boom. · Warnell Company - [STC SH95WE](https://openairdocs.org/stc/SH95WE.md): Installation of low profile spray system. · Simplex Manufacturing Co · Lists 47 Series - [STC SH200WE](https://openairdocs.org/stc/SH200WE.md): Installation of stirrup assemblies to directional control pedals for operation by handicapped pilot. · Dallwig Barry C - [STC SH214NW](https://openairdocs.org/stc/SH214NW.md): Installation of Simplex Model 4100 Aerial Dust System. · Simplex Manufacturing Co - [STC SH169WE](https://openairdocs.org/stc/SH169WE.md): Installation of exhaust muffler assembly. · Lear Avia Corporation - [STC SH252SW](https://openairdocs.org/stc/SH252SW.md): Bendix 100-ampere generator30E16-11C. · Ward Intl Aircraft Service · Lists 47 Series - [STC SH5-25](https://openairdocs.org/stc/SH5-25.md): Installation of tundra snow shoes. · ERA Helicopters, Inc · Lists 47 Series - [STC SH4-1512](https://openairdocs.org/stc/SH4-1512.md): Installation of adapter assembly for bomb shackel, or cargo hook. · USDA Forest Service · Lists 47 Series - [STC SH101WE](https://openairdocs.org/stc/SH101WE.md): Replacement of existing 50 ampere generator with 100 ampere RWS-985-1340 generator. · Aviation Power Supply Inc · Lists 47 Series - [STC SH48WE](https://openairdocs.org/stc/SH48WE.md): Installation of turbosupercharged Lycoming TVO-435-B1A engine. · Jobmaster Co Inc · Lists 47 Series - [STC SH176EA](https://openairdocs.org/stc/SH176EA.md): Stewart-Warner heater. · E W Wiggins Airways Inc · Lists 47 Series - [STC SH479SW](https://openairdocs.org/stc/SH479SW.md): 6V350A engine. · Franklin Engine Co Inc · Lists 47 Series - [STC SH4-1315](https://openairdocs.org/stc/SH4-1315.md): Seeding accessory. · Rollinger Bernard J · Lists 47 Series Next page: https://openairdocs.org/model/bell-47b/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 s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model FROM ( SELECT stc_number, min(matched_model) AS matched_model FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_stc.parquet' WHERE aircraft_model_code IN ('1180604') GROUP BY stc_number ) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number) ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_number ``` This list as a web page: https://openairdocs.org/model/bell-47b/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.