# STCs that may be installed: N985B A list on [N985B](https://openairdocs.org/aircraft/N985B.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 3 · 107 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 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 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 SH909SW](https://openairdocs.org/stc/SH909SW.md): Installation of Franklin 6V-350-A engine, derated to 200 HP. Limited to installation on serial number 1355 ONLY. · Texas Helicopter Co. 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 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 SH2231NM](https://openairdocs.org/stc/SH2231NM.md): Installation of Pheromone aerial application system. (47H-1 Restricted cat.) · Herculite Products, Inc - [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 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 Next page: https://openairdocs.org/aircraft/N985B/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 = '1181011' UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '27033') 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/N985B/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.