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 SR00528DEInstallation of an Emergency Medical System (EMS).STC SR00853DEInstallation of Fibrotek survey stingerSTC SR04548CHInstallation of Appareo Systems AIRS-400 Flight Monitoring SystemSTC SR00425SEInstallation of a satellite phone.STC SR00184IBInstallation of External Cargo Basket and Boarding StepSTC SR00182IBInstallation of the Avidyne Integrated Flight Display (IFD) Navigator(s)STC SR02345LAInstallation of HeliSAS stability augmentation system and autopilotSTC SR04637CHReplacement of existing main ship battery with Lithium Ion Battery and installation of Annunciator Control
PanelSTC SR09509RCInstallation of Garmin GRA 5500 Radar Altimeter SystemSTC SR04138NYInstallation of Replacement Heater LinesSTC SR00150IBInstallation of a Direction Finder model RT-600STC SR00155IBInstallation of Video transmission System, to include a cabin rack, a cabin display mount and two antenna holders on landing skidsSTC SR02572AKInstallation of the "StableLight" 4-axis autopilotSTC SR02120SEInstallation of Garmin GTN 6XX/7XX Navigation SystemSTC SR00082DEInstallation of a swivel mount armSTC SR00429NYInstallation and configuration of Left Side Pilot ConfigurationSTC SR04535NYInstallation of the Astronics (Max-Viz) 1200 or 1400 EVSSTC SR00118IBManufacture of Cargo Hook Mount for Side Pull OperationsSTC SR04692NYInstallation of Airframe-Mounted Fuel FilterSTC SH3319NMInstallation of Precise Flight Pulselite Control Unit in the
Landing /Taxi Recognition Visual Control Light system,STC SR00699NYInstallation of LH and/or RH cargo pods.STC SR00376BOThe STC installs a SATCOM and Flight Data Monitoring System KIT 350-SAT-100STC SR11334DSInstallation of a Flightcell DZMx Satellite/Cellular/Tracking SystemSTC SR00470LAInstallation of Emergency FloatsSTC SR02762SEInstallation of Onboard Systems International Cargo Swing Suspension SystemSTC SR04557NYInstallation of the Fuel Cap ReplacementSTC SR11322DSInstallation of the U.S. Customs and Border Protection configuration of systems and equipmentSTC SR00091IBInstallation of the Bear Paw KitSTC SR00071IBInstallation of Geo-Physical Survey SystemSTC SR04669NYInstallation of Human External Cargo Y-Rope and Long-Line KitSTC SR03512ATInstallation of HID Landing and Taxi LightsSTC SR11189DSInstallation of provisions to install Garmin G500H GDU 1060 Display, L3 ESI-500 Electronic Standby Indicator and TA202 USB Charging PortSTC SR01644NYSearchlight installation in three configurations.STC SR09500RC-DInstallation of L-3 Trilogy ESI-2000 or ESI-500 Electronic Standby IndicatorSTC SH3509SWInstallation of a Single and Dual Condenser Blower Air Conditioning SystemSTC SR00886SEInstallation of Onboard Systems International Cargo Hook KitsSTC SR01164SEInstallation of Onboard Systems International Cargo Hook Swing Suspension SystemSTC SR01165SEFabrication of Onboard Systems Model 200-282-00 and 200-282-03, Cargo Hook Sling Suspension Kits.STC SR01166SEFabrication of Onboard Systems Model 200-281-00 Cargo Hook KitSTC SR01393SEFabrication of Onboard Systems Model 200-286-01 Cargo Hook KitsSTC SR01394SEFabrication of Onboard Systems Models 200-287-00 and 200-287-01 Cargo Hook KitsSTC SR01588SEFabrication of Onboard Systems Model 200-299-00 Fuel Drain Guard Kit in accordance with Federal Aviation Administration (FAA) approved Onboard Systems Master Drawing List No. 155-111-00, Rev. 6, dated March 11, 2011, or later FAA-approved revision and Installation of the Fuel Drain Guard KitSTC SR01804SEInstallation of Onboard Systems International Load Weigh SystemSTC SR01862SEFabrication of Onboard Systems Model 200-282-01 or 200-282-02, Cargo Hook Sling Suspension SystemSTC SR02719SEInstallation of Onboard Systems International Cargo Swing Suspension SystemSTC SR02758LAInstallation of an AKV, Inc Data Collection SystemSTC SR01033DEInstallation of the Green Power Monitoring Systems (GPMS) Foresight MX Condition Monitoring SystemSTC SR02314LAInstallation of Sandel Avionics ST3400H Helicopter Terrain Awareness and Warning System (HTAWS)STC SR02001SEFabrication and installation of Model 72448 locking fuel cover assemblySTC SR01078DEInstallation of Medical Interior Enhancements