# STCs that may be installed: Bell 47D A list on [Bell 47D](https://openairdocs.org/model/bell-47d.md). In force first, then newest. The registry doesn’t record which STCs an aircraft has. - [STC SA00068SE](https://openairdocs.org/stc/SA00068SE.md): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1) · Electronics International Inc. - [STC SA00680SE (2 OF 6](https://openairdocs.org/stc/SA00680SE%20(2%20OF%206.md): Installation of Electronics International model UBG-16 or UBG-16T bar graph engine analyzer. · Electronics International - [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 SA02268CH](https://openairdocs.org/stc/SA02268CH.md): Installation of Airwolf Filter Corp. Air Oil Separator · Airwolf Filter Corporation - [STC SA02520AT](https://openairdocs.org/stc/SA02520AT.md): Installation of M-20 Oil Separator, model 600-WP. · M-20 Oil Separators LLC - [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 SA2190NM PAGE 1](https://openairdocs.org/stc/SA2190NM%20PAGE%201.md): Installation of electronics International Digital Volt/Amp Gauges and Accessories. · Electronics International - [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 SA2687NM](https://openairdocs.org/stc/SA2687NM.md): Installation of Truboplus/ Electronics Int'l gauges and switches. · Aero Manufacturing Inc. - [STC SA2693NM](https://openairdocs.org/stc/SA2693NM.md): Installation of Electronics International digital volt/amp gauges and accessories. · Electronics International Inc. - [STC SA2844CE (1 OF 2)](https://openairdocs.org/stc/SA2844CE%20(1%20OF%202).md): Installation of a plastic cap enclosure over the anti-collision strobe light system. · Air Transport Inc - [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 SA4172NM](https://openairdocs.org/stc/SA4172NM.md): Installation of Aviation Development oil filter. · Aviation Development Corporation - [STC SA4302NM](https://openairdocs.org/stc/SA4302NM.md): Installation of Electronics Int'l digital automatic 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 SA593CH](https://openairdocs.org/stc/SA593CH.md): Install Champion SlickSTART magneto booster system. · Champion Aerospace LLC - [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 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 SH1152NW](https://openairdocs.org/stc/SH1152NW.md): Installation of the Automatic Flagman Model 135 Control Stick Grip · Air Products & Parts LLC - [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 SH279SW](https://openairdocs.org/stc/SH279SW.md): Modification of dual control cyclic stick into quick removable stick similar to Bell 47A stick by cutting off the stick and making an insert of 4130 steel tube to fit inside · Scott's Bell 47 Inc - [STC SH2840SW](https://openairdocs.org/stc/SH2840SW.md): Chemical spray boom. · Warnell 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 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 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 SH4173NM](https://openairdocs.org/stc/SH4173NM.md): Installation of Simplex Model 7600 modular electrical system. (US ARMY OH-13E M74A) · Simplex Manufacturing Company - [STC SH506GL](https://openairdocs.org/stc/SH506GL.md): Installation of modified tail rotor gearbox using original installation hardware and components. · Helicopters, Inc - [STC SH77WE](https://openairdocs.org/stc/SH77WE.md): Installation of Simplex Bi-Fluid Spray System. · Simplex Manufacturing Co - [STC SH828NW](https://openairdocs.org/stc/SH828NW.md): Installation of weighing system. (AS MODIFIED BY STC SH657NW) · Onboard Weighing Systems - [STC SH95WE](https://openairdocs.org/stc/SH95WE.md): Installation of low profile spray system. · Simplex Manufacturing Co - [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 SR01430LA](https://openairdocs.org/stc/SR01430LA.md): Installation of Stainless Steel Skid shoes. · Papas Gary Los Angeles Laboratories Inc. - [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 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 SR02487AK](https://openairdocs.org/stc/SR02487AK.md): Installation of L-3 Communications Avionics Systems ESI-500 Standby Instrument System · ADS-B Technologies, LLC - [STC SR02704SE](https://openairdocs.org/stc/SR02704SE.md): Installation and maintenance of the Sunspot 36 and 46 series lights · AeroLED's Holdings LLC - [STC SR09066RC](https://openairdocs.org/stc/SR09066RC.md): Fabricate the HAC-47-3 Tail Rotor Blade. · 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 SA01240SE (3 OF 5)](https://openairdocs.org/stc/SA01240SE%20(3%20OF%205).md): Installation of secondary voltage indication system · Visual Instruments LLC - [STC SA2350NM](https://openairdocs.org/stc/SA2350NM.md): Installation of Electronics International Inc digital carburetor/outside air temperature gauges listed on the attached continuation sheet and the associated accessories. · Electronics International - [STC SA593CH (1 OF 5)](https://openairdocs.org/stc/SA593CH%20(1%20OF%205).md): Install Champion SlickSTART magneto booster system. · Champion Aerospace LLC - [STC SH3319NM (1 OF 2)](https://openairdocs.org/stc/SH3319NM%20(1%20OF%202).md): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system, · Precise Flight Inc ## 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 FROM 'https://openairdocs.org/data/latest/faa_stc.parquet' s WHERE s.stc_number IN (SELECT stc_number FROM 'https://openairdocs.org/data/latest/faa_stc_model.parquet' WHERE model_key = '47D') ORDER BY s.status = 'Current' DESC, s.stc_number ``` This list as a web page: https://openairdocs.org/model/bell-47d/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.