# STCs that may be installed: N74SP A list on [N74SP](https://openairdocs.org/aircraft/N74SP.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 · 99 STCs - [STC SR00149DE-D](https://openairdocs.org/stc/SR00149DE-D.md): Installation of an Air Methods tail stinger attachment modification. · Air Methods LLC - [STC SR00184DE](https://openairdocs.org/stc/SR00184DE.md): Installation of medical interior air transport unit. (222U s/n 47542) · Air Methods LLC - [STC SR00235DE-D](https://openairdocs.org/stc/SR00235DE-D.md): Installation of an Articulating Patient Loading System (APLS). · Air Methods LLC - [STC SR00148DE-D](https://openairdocs.org/stc/SR00148DE-D.md): Installation of an Air Methods Emergency Medical System; Serial Number 47518 only · Air Methods LLC - [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 SH4793NM](https://openairdocs.org/stc/SH4793NM.md): Fabrication of Onboard Systems Model E-73 Cargo Hook Load Cell System · Onboard Systems International - [STC SR02330AK](https://openairdocs.org/stc/SR02330AK.md): Installation of the Max-Viz® Enhanced Vision System (EVS) Models 1000/1500 and associated hardware · PECO Inc - [STC SR00925DE](https://openairdocs.org/stc/SR00925DE.md): Installation of Garmin GTX 335/335R and GTX345/345R transponders to provide ADS-B Out and In functionality · Peregrine - [STC SR00188DE](https://openairdocs.org/stc/SR00188DE.md): Installation of emergency medical interior configuration using a Lifeport PLUS unit. · LifePort LLC - [STC SR00360DE](https://openairdocs.org/stc/SR00360DE.md): Installation of medical system. · LifePort LLC - [STC SH8615SW](https://openairdocs.org/stc/SH8615SW.md): Installation of replacement passenger door windows. · The NORDAM Group LLC - [STC SH8613SW](https://openairdocs.org/stc/SH8613SW.md): Installation of replacement roof skylight windows. · The NORDAM Group LLC - [STC SH8614SW](https://openairdocs.org/stc/SH8614SW.md): Installation of replacement of opera picture windows. · The NORDAM Group LLC - [STC SH8616SW](https://openairdocs.org/stc/SH8616SW.md): Installation of replacement chin bubble windows. · The NORDAM Group LLC - [STC SH8632SW](https://openairdocs.org/stc/SH8632SW.md): Installation of replacement crew door windows. · The NORDAM Group LLC - [STC SH5777SW](https://openairdocs.org/stc/SH5777SW.md): Installation of single sheet(passenger) mounting. · Associated Air Center, Inc. - c/o CT Corporation System - [STC SH3620SW](https://openairdocs.org/stc/SH3620SW.md): Installation of an Emergency Medical System (EMS) electrical system and interior. (222U S/N 47533 AND 47547) · RSG Products - [STC SH3707SW](https://openairdocs.org/stc/SH3707SW.md): Installation of a blackout curtain · RSG Products - [STC SH3708SW](https://openairdocs.org/stc/SH3708SW.md): installation of a two-bottle oxygen rack · RSG Products - [STC SH3709SW](https://openairdocs.org/stc/SH3709SW.md): Installation of aft cabinet · RSG Products - [STC SH3710SW](https://openairdocs.org/stc/SH3710SW.md): Installation of aft litter bracket · RSG Products - [STC SH8673SW](https://openairdocs.org/stc/SH8673SW.md): Tail skid modification. · RSG Products - [STC SR08991RC](https://openairdocs.org/stc/SR08991RC.md): Installation of a Honeywell EDZ-705 dual tube elctronic flight instrument system. · RSG Products - [STC SH3613SW](https://openairdocs.org/stc/SH3613SW.md): Installation of a pivoting, tracking litter assembly. · RSG Products - [STC SH3621SW](https://openairdocs.org/stc/SH3621SW.md): Installation of a defibrillator container. · RSG Products - [STC SH3623SW](https://openairdocs.org/stc/SH3623SW.md): Installation of a medical stowage cabinet in aft cabin bulkhead. · RSG Products - [STC SH3624SW](https://openairdocs.org/stc/SH3624SW.md): Installation of a litter/ stretcher attachment bracket. · RSG Products - [STC SH3625SW](https://openairdocs.org/stc/SH3625SW.md): Installation of oxygen bottle rack in baggage compartment. · RSG Products - [STC SH5880SW](https://openairdocs.org/stc/SH5880SW.md): Installation of Sperry digital automatic flight control system SPZ-7000. · RSG Products - [STC SH5941SW](https://openairdocs.org/stc/SH5941SW.md): Installation of Loud Hailers. · RSG Products - [STC SH7937SW](https://openairdocs.org/stc/SH7937SW.md): Installation of an observer/attendant seat. · RSG Products - [STC SH7938SW](https://openairdocs.org/stc/SH7938SW.md): Installation of a stowable attendant seat. · RSG Products - [STC SH7939SW](https://openairdocs.org/stc/SH7939SW.md): Installation of a secondary stretcher. · RSG Products - [STC SH7940SW](https://openairdocs.org/stc/SH7940SW.md): Installation of a primary litter carriage and stowage cabinet. · Fort Worth - [STC SH7941SW](https://openairdocs.org/stc/SH7941SW.md): Installation of a secondary attendant seat. · RSG Products - [STC SH8036SW](https://openairdocs.org/stc/SH8036SW.md): Installation of floor tracks for litter/equipment attachments. · RSG Products - [STC SH8037SW](https://openairdocs.org/stc/SH8037SW.md): Installation of a tracking attendant seat. · RSG Products - [STC SH8038SW](https://openairdocs.org/stc/SH8038SW.md): Installation of a dual pivot litter with cabinet. · RSG Products - [STC SH5225NM](https://openairdocs.org/stc/SH5225NM.md): Installation of a freon air conditioning system. · Air Comm Corporation - [STC SH5226NM](https://openairdocs.org/stc/SH5226NM.md): Installation of a bleed air cabin heating system. · Air Comm Corporation - [STC SH3784SW](https://openairdocs.org/stc/SH3784SW.md): Installation of an emergency exit and camera opening window. · Bell Helicopter Textron Inc. - [STC SR00457AT](https://openairdocs.org/stc/SR00457AT.md): Installation of interior trim parts. · Bell Helicopter Textron Inc. - [STC SR01133AT](https://openairdocs.org/stc/SR01133AT.md): Manufacture of baggage floor protectors · Bell Helicopter Textron Inc. - [STC SR01668AT](https://openairdocs.org/stc/SR01668AT.md): Manufacture of Crew Emergency Push Out Windows in accordance with Aeronautical Accessories, Inc. Drawing List Report AA-98035, no revision, dated March 23, 1998, and installation per Report AA-98032, no revision, dated February 26, 1998, or AA-98077, Revision A, dated August 12, 1998, or later FAA approved revisions. · Bell Helicopter Textron Inc. - [STC SR01545SE](https://openairdocs.org/stc/SR01545SE.md): Installation of a Supplemental Lighting System. · Aviation Specialties Unlimited Inc. - [STC SH8591SW](https://openairdocs.org/stc/SH8591SW.md): Installation of a Bendix King KLN 90 GPS navigation system. · Texas Aviation Services - [STC SR09037RC](https://openairdocs.org/stc/SR09037RC.md): Installation of crew window. · Texas Aviation Services - [STC SR09140RC](https://openairdocs.org/stc/SR09140RC.md): Installation of a Retractable Passenger Step. · Texas Aviation Services - [STC SR09141RC](https://openairdocs.org/stc/SR09141RC.md): Installation of a Retractable Utility Step. · Texas Aviation Services - [STC SA2693NM](https://openairdocs.org/stc/SA2693NM.md): Installation of Electronics International digital volt/amp gauges and accessories. · Electronics International Inc. Next page: https://openairdocs.org/aircraft/N74SP/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 = '1182140' UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '41560') 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/N74SP/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.