TCDS 4A21
STCs approved under this data sheet · 238
Current certificates first, most recently changed first.
Query with SQL
duckdb -csv -c "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"
Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
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
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
STC SA2EAReplacement of universal type drive shaft P/N 204679 with Bendix flexi- ble drive shaft model 19E40-1B between the P&W J3C or JT4A series engine mounted gearbox and Sundstrand constant speed drive.STC SA401EA-DInstallation of door mounted evacuation slidesSTC SA532EAInstallation of fabric cargo bins in passenger compartment. (720-048, -023B, -062, -030B, -027) (707-123B, -123, -121B, -295, -227, -155C, -139B) (727-81, -21C, -27, -27C, -95, -21, -90C, -321, -321C, -327C, -323C, -321B, -331)STC SA677CEInstallation of Crimsco cargo container, P/N 600301, in passenger compartment. (720-023B) (707-121) (707-321)STC SA1052CEReplacement of existing fire detection system with a Kidde dual loop fire detection system. (707-131B)STC SA1867SWInstallation of portable solid oxygen system for flight attendant/passenger first-aid useSTC SA827CEInstall Butler National Corp. flight recorder/communications interface unit. (707-131) (707-331)STC SA1-473ADF system modification.STC SA349EAOxygen system.STC SA350EAPassenger Berth Installations. (707-153B) (707-353B)STC SA645EAInstallation of Stateroom Air Conditioning System. Approved for model 707-153B, serial numbers 17925, 17926, 17927 incorporating Horton & Horton STC SA924SW.STC SA81NWMinor modifications to pilot's instrument panel and relocation of autopilot accelerometer and rate gyros for improved performance. (707-153B)STC SA2605WEInstallation of turbine thrust reverser linkage. (707-100B)STC SA519CEInstallation of logo lights in horizontal stabilizer. (707-131B) (707-331)STC SA680CEModify the A.C. essential bus power source circuitry to provide automatic transfer. (707-124) (707-331)STC SA784CEInstallation of Bendix standby horizon indicator.STC SA1138WEInstallation of fire warning monitoring circuit in engine fire detection system. (707-227, 720-027)STC SA797EAInstallation of inflight motion picture system. (707-138B)STC SA2635WEInstallation of forward fan thrust reverser bearings. (707-100B)STC SA2637WEInstallation of aft thrust reverser lower latch hook bearings.STC SA10GLInstallation of Gayston Model 800LG and 800SG static dischargers on transport category airplanes.STC SA311EAInstallation of Aerotherm Corp. Model 1003 stretcher. (707-321) (720-023B) (707-121)STC SA862CEAddition of large cargo door in left hand side of fuselage. (707-131)STC SA420EA-DRelocate the L.A.S.I. Flight Data Recorder to the aft fuselage area at
Sta. 1462, utilizing a remote vertical accelefometer in the left wheel well.
Install a new auxiliary pitot tube and static ports for the flight recorder. Install a Flight Recorder/Communicaticn UnitSTC SA415EA-DInstallation of Bell & Howell projection systemSTC SA1937WEInstallation of under-seat baggage restraint system. (720-023B) (707-121B)STC SA858EAModification of rigid high pressure starter air lines on numbers 2 and3 engines. (707-153B) (707-353B)STC SA856EAInstallation of a compartment bulkhead at fuselage station 978. (707-153B)STC SA405EA-DConvert all Boeing 707-123B aircraft to the summer passenger cabin configuration (4 first class lounge, 26 first class seats, and 101 tourist class seats) by removing one coat compartment, three first class double seats and installing two additional rows of tourist class seats and LH class dividerSTC SA555EA-DTo comply with FAR 25.812(e), a lever lock switch will be installed at a point accessible to the forward flight attendant seat and the necessary circuitry will be installed to allow the flight attendant to turn the emergency lights "on"STC SA554EA-DInstall underseat luggage retention deviceSTC SA551EA-DInstallation of autopilot go-around unitSTC SA420SWInstall Dual Collins FD-108 flight director system replacing Collins ID -105 Flight Director System having dual instrumentation with single steering computerSTC SA607CEInstallation of provisions for dual radio altimeters and single Bendix Model ALA-51A equipment. (707-131)STC SA429CEInstallation of an auto thrust system.STC SA555CEInstallation of a single SCAT system. (707-131)STC SA556CEInstallation of auto-thrust provisions. (707-124)STC SA290CEInstallation of a single auto throttle system.STC SA425CEInstallation of an auto thrust system.STC SA439CEInstallation of logo lights on horizontal stabilizer. (707-124)STC SA1700WEInstallation of Dual Litton LTN-51 Inertial Navigation Systems. (707-153B)STC SA531EAInstallation of EMCO autopilot monitoring system Model No. APMS-E. (707-121B)STC SA432CEInstallation of Fenwall fuel vent surge tank protection system. (707-131)STC SA516EA-DInstall 30 hz. choke in Bendix Course Indicator P/N 7236-2A12-A2STC SA3-708Install motion picture projector and screen. (707-131) (707-331)STC SA502EA-DInstall a triple class cabin divider to partition the area between the economy and coach passengers.STC SA419EA-DInstall vertical remote accelerometer and adapter harness to permit interchangeable use with a modified or unmodified flight recorder in the existing locationSTC SA146SOModified structure of aircraft to provide for inertial navigation system.STC SA248CEAutopilot variable angle intercept.STC SA375CEAutopilot amplifiers modified to incorporate variable angle intercept feature.
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