N521
STCs that may be installed · 401
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.
Query with SQL
duckdb -csv -c "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 = '1145005'
UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '59997')
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"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 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 = '1145005'
UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '59997')
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_numberRun 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.
Airframe · Airbus Helicopters AS350B3
STC SH5787SWManufacture of Replacement Windshield.STC SR00463NYInstallation of a rear locker extender.STC SR02207SEFabrication of the Simplex Model 510 Spray System in accordance with Master Drawing List MDL510-001, Revision H, dated November 22, 2011, or later Federal Aviation Administration (FAA) approved revision; and installation in accordance with Installation Manual 510-102002-001, Revision B, dated November 14, 2011, or later FAA-approved revision.STC SR00171ATInstallation of shoulder harness restraint system.STC SR00183ATManufacture of replacement windshields and windows.STC SR03059NYInstallation of an A790 Loud Hailer ControllerSTC SR09456RCInstallation of Night Vision Goggle Compatible Interior Lighting System.STC SR00825NY-DCentre Console UpgradeSTC SR09518RCInstallation of Night Vision Goggle (NVG) compatible interior lighting system in accordance with Ahlers Aerospace, Inc. Master Drawing List 350-01(E99-129), Rev W, dated July 12, 2011, or later Federal Aviation Administration (FAA) approved revision. Rotorcraft Flight Manual Supplement: Ahlers Aerospace, Inc., Document No. E99-150, Rev. B, dated August 4, 2010; or E99-271, Rev. IR, dated July 12, 2011; or laterSTC SR00273LAInstallation of Tyler Camera Major MountSTC SR00123LA-D: Installation of External Load Attaching Means in accordance with Heli-Support, Inc. Master Index List No. 121-401, Revision A, dated September 20, 2001, or later approved revision. Rotorcraft Flight Manual Supplement No. 121-121 requested for this installation is listed on the approved Master Document List.STC SR00125LA-DInstallation of Internal Load Attaching Means (ILAM) in accordance with Heli-Support, Inc. Master Document List (MDL) No. 123-000, Revision C, dated April 12, 2002, or later FAA approved revision. Rotorcraft Flight Manual Supplement No. 123-121, Revision A, dated April 12, 2002, or later FAA approved revisions required as part of these modifications.STC SR01784LAInstallation of Airfilm AFDP-1 Down Post Utility BracketSTC SR02232LAInstallation of Garmin Model 400W / 500W Series GPS-WAAS Navigation SystemSTC SR01631LAInstallation of starter/generator.STC SR09369RC-DFlitestep Kit in accordance with Aeronautical Accessories, Inc. Drawing List, Report No. AA-03068, Revision A, dated September 30, 2003, or later DAS approved revision; and installation per Report No. AA-02047, No Revision, dated June 27, 2003, or later DAS approved revisions.STC SR02797CHInstallation of a Vision 1000 SystemSTC SR01665SEInstallation of SAGEM ICDS 2000 Electronic Flight Instrument System.STC SR00098NYSpacepod (Side Cargo Compartment Extenders) installationSTC SR10117LA-DInstallation of landing gear skid tubes.STC SH989NEInstallation of vertical reference (floor) window.STC SR02685NYThe installation of the Brite Saver 2 Data Monitoring System must be performedSTC SR02338AKInstallation of an Intelligent Automation Corporation, Model 1134 Helicopter Monitor SystemSTC SR02686CHInstallation of an Aircraft Logging and Event Reporting for Training and Safety (ALERTS) SystemSTC SR02093NYInstallation of MX-15 Camera Installation (Structural Provisions only).STC SR02174LAInstallation of Aprical Industries, Inc. Air Conditioning System.STC ST02183LAInstallation of Apical Industries, Inc. Air Conditioning System.STC SR02634NYThe installation of WESCAM Low Profile Bracket Installation (HIGH) and 24 , 16 or 12 WESCAM Sensor Installation-Structural Provisions OnlySTC SR02189NYIinstallation of SkyTrac ISAT-100 Airborne Position/Data Communicator System.STC SR01924SEONE ONLY STC, SN 4184: Installation of a Supplemental Lighting SystemSTC SR00890SEFabrication of Simplex Model 210 agricultural spray tank systemSTC SR02557NYInstallation of Thermoformed D350-766 Interior Trim KitsSTC SR09127RC-DInstallation of a vertical sliding window in right-hand or left-hand sliding door. RFMS 350FMS-066 dated 8/28/00, or later FAA approved RFMS is required. Both configurations cannot be installed concurrently.STC SH5239NMInstallation of Spectrolab SX-5 Starburst Searchlight.STC SH5242NMInstallation of passenger/crew step.STC SR00018DEInstallation of isolette carriage.STC SR00354DEInstallation of avionics systems.STC SR01827SEInstallation of a sun visor on an aircraft.STC SR02206AKInstallation of Garmin AT, MX20 Multi-Function Display (MFD).STC SR02494NYInstallation of DMS ARINC data recorderSTC SR02345NYInstallation of a Fuselage Mounted Liferaft SystemSTC SR00118BOInstallation of Pratt & Whitney Engine Services, Inc. SmartCycle Engine Monitoring System, Part No. CYCLE-K-010,STC SR00169BOInstallation of Altair Avionics Corporation SmartCycle monitoring and recording system.STC ST02481CHInstallation of camera quick disconnect mounting.STC SR00639DE-DInstallation of Dual Nightscanner Searchlights.STC SR02450NYInstallation of POP Imaging SystemSTC SR02065LAInstallation of Apical Industries, Inc. Lower Front Fairing Assembly.STC SR02379NYInstallation of Technisonic TDFM-7000 Model TransceiverSTC SR02359NYCrosstube installationSTC SR01144NYInstallation of Heli-Utility-Pod.