# STCs approved under this data sheet: TCDS 4A22 A list on [TCDS 4A22](https://openairdocs.org/tcds/4A22.md). Current certificates first, most recently changed first. Page 1 of 3 · 113 STCs - [STC ST12461IB](https://openairdocs.org/stc/ST12461IB.md): Installation of Cockpit Voice Recorder with optional RIPS Upgrade · Mid- Canada Mod Center - [STC SA2622NM](https://openairdocs.org/stc/SA2622NM.md): Installation of Precise Flight Pulselite Control Unit in landing/taxi system. (767-200 B17) (DHC-8 101) · Precise Flight Inc. - [STC ST00353LA](https://openairdocs.org/stc/ST00353LA.md): Installation of a 3000 gallon retardant tank system. · Air Spray USA Inc. - [STC ST02636LA](https://openairdocs.org/stc/ST02636LA.md): Modification to upgrade the existing XS-950 Mode S Transponder system to add ADS-B Out · Aviation Communication and Surveillance Systems (ACSS) LLC - [STC SA8009NM](https://openairdocs.org/stc/SA8009NM.md): Installation of a 3000 gallon fire retardant tank system · United Aeronautical Corporation - [STC SA2197WE](https://openairdocs.org/stc/SA2197WE.md): Installation of Brownline modified cargo restraint system. · Telair US LLC - [STC SA3675WE](https://openairdocs.org/stc/SA3675WE.md): Installation of Brownline cargo system P/N 46234-101. · Telair US LLC - [STC ST02524LA](https://openairdocs.org/stc/ST02524LA.md): Installation of TCAS version 7.0 · Aviation Communication and Surveillance Systems (ACSS) LLC - [STC SA2324WE](https://openairdocs.org/stc/SA2324WE.md): Installation of spraymat ice protection system on L-188 propeller spinner, Hamilton Standard P/N 553546, replacing Hamilton Standard heater blanket. · ROBERT W. MURRAY - [STC ST00986LA-D](https://openairdocs.org/stc/ST00986LA-D.md): Installation of lower cargo compartment smoke detection system provisions. · Ontic Engineering and Manufacturing Inc. - [STC SA1064SO](https://openairdocs.org/stc/SA1064SO.md): Increase in zero fuel weight from 82,500 lbs. to 90,800 lbs. · Aeronautical Engineers, Inc - [STC SA1071SO](https://openairdocs.org/stc/SA1071SO.md): Increase in zero fuel weight from 86,000 pounds to 92,340 pounds. · Aeronautical Engineers, Inc - [STC SA1081SO](https://openairdocs.org/stc/SA1081SO.md): Increase in fuel weight from86,000 pounds to 92,340 pounds. · Aeronautical Engineers Inc - [STC ST508SO](https://openairdocs.org/stc/ST508SO.md): Installation of lap/shoulder belts. · Aeronautical Engineers Inc - [STC ST885SO](https://openairdocs.org/stc/ST885SO.md): Modification to a cargo configuration. · Aeronautical Engineers Inc - [STC SA2536WE](https://openairdocs.org/stc/SA2536WE.md): Modification and installation of aft cargo door; cargo loading and retention system; strengthened floor support structure; increased zero fuel weight to 90,000 pounds; improved avionics and instrumentation. (Model 188A serial number 1035 and up) · Lockheed Martin Aeronautics Company - [STC SA7772SW](https://openairdocs.org/stc/SA7772SW.md): Replacement of existing torquemeters. · AVMAR a Michigan Corporation - [STC SA1637WE](https://openairdocs.org/stc/SA1637WE.md): Installation of cargo door approximately 80 inches high by 144 inches long in left side of fuselage forebody. · Lockheed Martin Aeronautics Company - [STC SA1754WE](https://openairdocs.org/stc/SA1754WE.md): Installation of cargo doors, cargo floor and other changes. (188A, 188C Aircraft SN 1070 and higher are eligible.) · Lockheed Martin Aeronautics Company - [STC SA4-1403](https://openairdocs.org/stc/SA4-1403.md): Installation of a Lockheed Aircraft Service model 109C flight data recorder. · Lockheed Martin Aeronautics Company - [STC SA707EA](https://openairdocs.org/stc/SA707EA.md): Relocation of cabin window right-side from fuselage station 217-236 to fuselage station 333-352. · Lockheed Martin Aeronautics Company - [STC SA708EA](https://openairdocs.org/stc/SA708EA.md): Installation of opening in fuselage right hand for emergency exit between fuselage station 226 and fuselage station 253.4. Is approved only for its structural, electrical and mechanical provisions and can be incorporated with STC SA707EA and STC SA709EA. · Lockheed Martin Aeronautics Company - [STC SA709EA](https://openairdocs.org/stc/SA709EA.md): Installation of floor structure and miscellaneous modifications. Is approved only for its structural and electrical provisions and can be incorporated with STC SA707EA and SA708EA. · Lockheed Martin Aeronautics Company - [STC ST01836NY](https://openairdocs.org/stc/ST01836NY.md): Three Man to Two Man Crew Conversion. · Cascade Aerospace Inc. - [STC ST01004NY](https://openairdocs.org/stc/ST01004NY.md): Installation of cargo restraint straps. · Airline Container Manufacturing Co Inc - [STC ST02035AK](https://openairdocs.org/stc/ST02035AK.md): Installation of Honeywell TCAS II. · ACSS (Aviation Communication and Surveillance Syst - [STC SA2405WE](https://openairdocs.org/stc/SA2405WE.md): Installation of PICO Division pressure regulator P/N 3001 on automatically inflatable emergency evacuation slides in lieu of International Inflatables pressure regulator P/N 68240 and 70003. · Goodrich Corporation - [STC SA1060GL](https://openairdocs.org/stc/SA1060GL.md): Installation of Norton Radome Kit4306CX. · Saint-Gobain Performance Plastics Corp - [STC SA1149SW](https://openairdocs.org/stc/SA1149SW.md): Installation of a hot water heater. · Signature Flight Support Corporation - [STC SA1150SW](https://openairdocs.org/stc/SA1150SW.md): Installation of Litton LTN 51 inertial navigation system. · Signature Flight Support Corporation - [STC SA2301WE](https://openairdocs.org/stc/SA2301WE.md): Installation of emblem light. · DeVore Aviation Corporation of America, a New Mexico Corporation - [STC SA2974WE](https://openairdocs.org/stc/SA2974WE.md): Modification for installation of aft galley and forward galley rework. · DeVore Aviation Corporation of America, a New Mexico Corporation - [STC ST01136AT](https://openairdocs.org/stc/ST01136AT.md): Modification of Lockheed Electra, Foote-Brothers Mfg. two-speed gear box P/N 50701-1, -2, -3, or -4. · Zantop Intl Airlines Inc - [STC ST02004AK](https://openairdocs.org/stc/ST02004AK.md): Installation of a Dual Bendix/King MLS-21 microwave landing system. · Reeve Aleutian Airways, Inc - [STC SA218WE](https://openairdocs.org/stc/SA218WE.md): Turbine installation GTC 85-90E or GTCP 85-291E. · AlliedSignal Aviation Services - [STC SA2754WE](https://openairdocs.org/stc/SA2754WE.md): Installation of an auxiliary power unit connector. · Steward-Davis Intn'l, Inc - [STC SA3120WE](https://openairdocs.org/stc/SA3120WE.md): Modification consisting of installation of cargo pallet restraint system. (188A s/n 1035 and up) · Pemco Engineers Inc - [STC SA5502NM](https://openairdocs.org/stc/SA5502NM.md): Modification of Lockheed model L-188A/L-188C airplanes. · Channel Express(Air Serviced) Ltd - [STC SA3117SO](https://openairdocs.org/stc/SA3117SO.md): Installation of an engine reduction gearbox electrical/magnetic chip detector system. · Zantop Intl Airlines Inc - [STC SA3118SO](https://openairdocs.org/stc/SA3118SO.md): Installation of fuel flowmeters and a fuel management system. · Zantop Intl Airlines Inc - [STC SA1833SO](https://openairdocs.org/stc/SA1833SO.md): Installation of an aft cargo door and cargo compartment interior. · Universal Cargo Doors & Serv, Inc - [STC SA1834SO](https://openairdocs.org/stc/SA1834SO.md): Installation of a forward cargo door and cargo compartment interior. · Universal Cargo Doors & Serv, Inc - [STC SA1506GL](https://openairdocs.org/stc/SA1506GL.md): Rebuilt alternate flap drive torque tube assembly P/N 807723-R, rebuilt Lockheed P/N 807723 with 4130 tubing and type design end fittings. · Zantop Intn'l Airlines Inc - [STC SA1506GL;](https://openairdocs.org/stc/SA1506GL%3B.md): Rebuilt alternate flap drive torque tube assembly P/N 807723-R, rebuilt Lockheed P/N 807723 with 4130 tubing and type design end fittings. · Zantop Intn'l Airlines, Inc - [STC SA4925NM](https://openairdocs.org/stc/SA4925NM.md): Installation of horse containers. · Instone Airline Ltd - [STC SA3148WE](https://openairdocs.org/stc/SA3148WE.md): Installation of Collins FPC-75 ground proximity warning system. · US Airways, Inc - [STC SA2043SO](https://openairdocs.org/stc/SA2043SO.md): Installation of dual Sperry SPI-402, flight director system. · Zantop Intl Airlines Inc - [STC SA2012SO](https://openairdocs.org/stc/SA2012SO.md): Installation of a divider and a courier seat. · Spirit America Airlines - [STC SA835GL](https://openairdocs.org/stc/SA835GL.md): Modification of underwing fuel quantity gages, Accessory Prod. Co. P/N 727100 (Lockheed P/N LAC 634063) by removing spring and poppet valve and installing a petcock P/N CCA-1550 (TSO-C76). · Zantop Intn'l Airlines, Inc - [STC SA1495SO](https://openairdocs.org/stc/SA1495SO.md): Modification of Flight Equip. and Engrg. double passenger seat model650L to attach a double shoulder harness/lap belt assembly. · Survival Products Inc Next page: https://openairdocs.org/tcds/4A22/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 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 tcds_number = '4A22') ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_number ``` This list as a web page: https://openairdocs.org/tcds/4A22/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.