# STCs approved under this data sheet: TCDS 4A21 A list on [TCDS 4A21](https://openairdocs.org/tcds/4A21.md). Current certificates first, most recently changed first. Page 1 of 5 · 238 STCs - [STC ST00885LA](https://openairdocs.org/stc/ST00885LA.md): Installation of fire extinguisher cartridges as replacements for Pacific Scientific fire extinguisher cartridges in fire extinguisher bottles. · AMETEK AMERON, LLC d/b/a MASS Systems - [STC ST04222AT](https://openairdocs.org/stc/ST04222AT.md): Installation of a Fuel System Modification · Omega Air Inc. - [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 SA2579WE](https://openairdocs.org/stc/SA2579WE.md): Modify installation of wing tip mounted emblem light · The Boeing Company - [STC SA3927NM](https://openairdocs.org/stc/SA3927NM.md): Installation of floor proximity emergency escape path marking system. · Bruce Aerospace Inc. - [STC ST00098IB](https://openairdocs.org/stc/ST00098IB.md): Introduction of ADS-B Out · STC Twenty One Limited - [STC SA2534SW-D](https://openairdocs.org/stc/SA2534SW-D.md): Replacement of Switch assembly Int'l Inflatables Co. P/N 68748, with DME Corp. P/N L-140 in emergency evacuation slide lighting system. · Astronics Luminescent Systems Inc - [STC SA2539SW-D](https://openairdocs.org/stc/SA2539SW-D.md): Replacement of light assembly, International Inflatables Co. P/N68555-1 with DME Corp. EL-104, EL-104A, and EL-104B in emergency slide lighting system. · Astronics Luminescent Systems Inc - [STC SA863EA](https://openairdocs.org/stc/SA863EA.md): Incorporation of DME Corporation emergency evacuation slide lighting system · Astronics Luminescent Systems Inc - [STC ST04177AT](https://openairdocs.org/stc/ST04177AT.md): Installation of a Talon Aerospace LED Replacement General Purpose Lamps · Aaxico Technical Services Inc. - [STC ST09020SC](https://openairdocs.org/stc/ST09020SC.md): Installation of a C&X band fuselage nose radome shell. · The NORDAM Group LLC - [STC SA1006NW](https://openairdocs.org/stc/SA1006NW.md): Installation of Avionics and Flight Instruments · Aviation Technical Services - [STC SA948NW](https://openairdocs.org/stc/SA948NW.md): Installation of zero passenger, zero cargo configuration · Aviation Technical Services - [STC ST04229NY](https://openairdocs.org/stc/ST04229NY.md): Introduction of a 16G New Generation Stretcher XL P/N 1120030-Series · Bucher Leichtbau AG - [STC SA4063SW](https://openairdocs.org/stc/SA4063SW.md): Installation of interior arrangement · Associated Air Center, Inc. - c/o CT Corporation System - [STC SA3186SO](https://openairdocs.org/stc/SA3186SO.md): Installation of a replacement coalescer filter, Greentree Aerotech, Inc. (GAI) P/N 22D10-1. · Purolator Facet, Inc - [STC SA7076NM](https://openairdocs.org/stc/SA7076NM.md): Installation of Stretcher Carrier. · Air Medic LLC - [STC SA8702SW](https://openairdocs.org/stc/SA8702SW.md): Installation of triple Canadian Marconi CMA-771 MK-IV Omega/ Global positioning system. · LB Aircraft Engineering Inc - [STC ST00682WI-D](https://openairdocs.org/stc/ST00682WI-D.md): Modification of Collins VHF-20/VHF-20A/VHF-20B VHF COMM Receiver Transmitter with CTL-20 Control Pro Line I System Installation to a Collins VHF-22C/VHF-22D VHF COMM Receiver Transmitter with CTL-22C Control 8.33 kHz Pro Line II System Installation in accordance with Collins Installation Instructions as listed on AML No. ST00682WI-D, Revision -, or later FAA approved revisions. · Rockwell Collins Inc - [STC SA781SO](https://openairdocs.org/stc/SA781SO.md): Installation of a cargo loading door. (707-227) · Pemco Aeroplex Inc - [STC ST02540AT-D](https://openairdocs.org/stc/ST02540AT-D.md): Installation of replacement fuel tank sealant system · FFC Manufacturing - [STC SA1076NE](https://openairdocs.org/stc/SA1076NE.md): Installation of Aerofex livestock carrier P/N TS-QA-400 platform and panel system using size A or size M Class II pallet. · Equine Air Transport Systems LLC - [STC SA3257WE](https://openairdocs.org/stc/SA3257WE.md): Installation of AiResearch GTCP85-98CK auxiliary power unit in forward cargo compartment. (707-123B, -138B) · Airweld Inc. - [STC SA3441WE](https://openairdocs.org/stc/SA3441WE.md): Installation of airstairs. (707-138B and 707-123B) · Airweld Inc. - [STC SA1176WE](https://openairdocs.org/stc/SA1176WE.md): Interior arrangements. · Flying Tiger Line Inc - [STC SA1229WE](https://openairdocs.org/stc/SA1229WE.md): United Data Control V557 cockpit voice recorder. · Flying Tiger Line Inc - [STC SA1079GL](https://openairdocs.org/stc/SA1079GL.md): Installation of Grimes Floor proximity lighting system P/N 10-1309-67. · Honeywell International Inc. - [STC ST02388NY](https://openairdocs.org/stc/ST02388NY.md): Installation of Automated Flight Information Reporting System (AFIRS) 220 with Optional Global Voice and Global Text Satellite Communications · AeroMechanical Services Ltd - [STC SA1308NM](https://openairdocs.org/stc/SA1308NM.md): Installation of auxiliary fuel tanks in the forward, mid, and aft cargo compartments. · Rogerson ATS - [STC SA4053WE](https://openairdocs.org/stc/SA4053WE.md): Installation of an auxiliary fuel tank system consiting of two identical tank assemblies located in the forward cargo compartment and one located in the aft cargo compartment. (707-123B) · Rogerson ATS - [STC ST01443SE](https://openairdocs.org/stc/ST01443SE.md): ONE-ONLY STC (S/N 18740): Non-group aircraft approval for Reduced Vertical Separation Minimum · AeroMech Incorporated - [STC SA1132EA](https://openairdocs.org/stc/SA1132EA.md): Installation of two Solar Model T-62T-40C2 APU's for ground use only. (707-138B) · PATS Aircraft LLC - [STC SA5971NM](https://openairdocs.org/stc/SA5971NM.md): Installation of flame reistant cargo covers. · Air Transport International LLC. - [STC ST00956LA](https://openairdocs.org/stc/ST00956LA.md): Installation of Burbank frangible stop flap guard at 30 degrees maximum approach flap position. · Topeka Management, Inc. - [STC ST655SO](https://openairdocs.org/stc/ST655SO.md): Installation of Mace Galley Model No. 101 in aft passenger compartment and Mace Galley Model No. 102 in forward passenger compartment. (707-121B). Installation is to be made on left side of the aircraft only. No installation is to be made forward of station 380 on 707-121B aircraft 1-99. · B/E Aerospace - [STC SA2988SW](https://openairdocs.org/stc/SA2988SW.md): Interior modification: Installation of an executive interior and odification of flight avionics system. Exterior modification: Add two ADF Loop Antennas, FS 420 and 460, one transponder antenna, 237Z1, FS 410, one at AT-460 VHF antenna and one TAT probe · L-3 Communications Integrated Systems LP - [STC SA5050SW-D](https://openairdocs.org/stc/SA5050SW-D.md): Modification of existing gravity flow water system in order to convert to a pressurized system and the installation of floor pans at entrance doors · L-3 Communications Integrated Systems LP - [STC SA8086SW-D](https://openairdocs.org/stc/SA8086SW-D.md): Installation of a folding cargo bay ladder. · L-3 Communications Integrated Systems LP - [STC SA8087SW-D](https://openairdocs.org/stc/SA8087SW-D.md): Installation of forward attendant seat/shoulder harness. · L-3 Communications Integrated Systems LP - [STC SA8088SW-D](https://openairdocs.org/stc/SA8088SW-D.md): Installation of an emergency locator transmitter (ELT) system. · L-3 Communications Integrated Systems LP - [STC SA9167SC-D](https://openairdocs.org/stc/SA9167SC-D.md): Updated Mission Communications System consisting of a 5 channel International Maritime Satellite(INMARSAT) system, LST-5E UHF SATCOM, secure voice or data capabilities and facsimile/printer. (707-153B) · L-3 Communications Integrated Systems LP - [STC SA1889SW](https://openairdocs.org/stc/SA1889SW.md): Installation of Xerox duplicating machine Model 2600 · L-3 Communications Integrated Systems LP - [STC SA1136EA](https://openairdocs.org/stc/SA1136EA.md): Installation of an onboard-folding passenger loading stairs. (model 707-138B) · Patrick Aircraft Products Inc. - [STC ST660SO](https://openairdocs.org/stc/ST660SO.md): Installation of Radome. · Saint-Gobain Performance Plastics Corp - [STC ST02094AT](https://openairdocs.org/stc/ST02094AT.md): Design of cabin window plug. · Neill Aircraft Company - [STC SA1263SW](https://openairdocs.org/stc/SA1263SW.md): Installation of AN/ARC-146 Satellite Communication Terminal. · Rockwell Collins Inc - [STC SA1264SW](https://openairdocs.org/stc/SA1264SW.md): Installation of Collins 837D-2 and 837K-1 antennas. · Rockwell Collins Inc - [STC SA1699WE](https://openairdocs.org/stc/SA1699WE.md): Installation of Dual Collins FD-109M flight director systems and Dual Collins DF-203 ADF systems. · Rockwell Collins Inc - [STC SA4000SW](https://openairdocs.org/stc/SA4000SW.md): Installation of dual Carousel IVA INS System. · Sierra Industries, Inc - [STC SA4010SW](https://openairdocs.org/stc/SA4010SW.md): Installation of Subfloor seat mounting structure · Sierra Industries, Inc Next page: https://openairdocs.org/tcds/4A21/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 = '4A21') ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_number ``` This list as a web page: https://openairdocs.org/tcds/4A21/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.