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 SR11333DSInstallation of a FLIR UltraForce 350-HD Surveillance SystemSTC SR11335DSInstallation of an Aft Console / Collective BarrierSTC SR11336DSInstallation of the Ukraine Border GuardSTC SR11338DSInstallation of an Avalex DVR AVR-8345 digital video recorderSTC SR04612NYInstallation of Garmin GTS Traffic Advisory SystemSTC SR09921ACDemonstration of aircraft critical equipment and antenna systems tolerance of radio frequency interference (RFI) from intentional or spurious transmissions from certain Portable Electronic Devices PEDs)STC SR04583NYInstallation of the COVID BarrierSTC SR02704SEInstallation and maintenance of the Sunspot 36 and 46 series lightsSTC SR01052DEInstallation of Non-Aviation Band FM Radio SystemsSTC SR02230AKInstallation of Chelton Flight Systems FlightLogic Electronic Flight Instrument System (EFIS)STC SR04531NYInstallation of the Integrated Health and Usage Monitoring System (HUMS)STC SR02770NYThe installation of Quick Release Maintenance Step, Maintenance Peg Step and Fixed Cabin StepSTC SR03913NYThe installation of Quick Release Bicycle RackSTC SR02680NYThe installation of External Attachement Provisions and Cargo Basket toSTC SR00457NYInstallation of a left-hand or right-hand cargo mirror.STC SR02622SEInstallation of Garmin G500H TXi Display System (Primary Flight Display (PDF), Multi-Function Display (MFD))STC SR11198DSInstallation of Garmin Optional FeaturesSTC SR09113RC-DInstallation of FLIR interchangeable systems 2000G or Safire II or star safire thermal/visible imaging system(s) or ultra media LE camera system.STC SR11195DSInstallation of OuterLink CommPoint CP-3I Tracking SystemSTC SR11317DSInstallation of a full width instrument panelSTC SR11318DSInstallation of an aft console, provisions only,STC SR11319DSInstallation of cockpit ballistic protection for the pilot and co-pilotSTC SR11320DSInstallation of an overhead box assembly with audio jacks and map lights in the mid-aft cabin and cockpitSTC SR09512DSInstallation of extended pilot and copilot seat railsSTC SR11193DSInstallation of seat back accessory boxesSTC SR02362AKInstallation of a fixed mounted Max-Viz® Enhanced Vision System (EVS) Model 1500 to include a sensor with conformal housing and power supply displaying imagery on any FAA-approved monitor with NTSC RS-170 video interface capabilitySTC SR09511DSInstallation of LED Taxi and Landing Lights with Optional PulseSTC SR03905NYInstallation of STC ST.7501 Fuel tank reinforced metal sheet cradlesSTC SR03931NYInstallation of a crash resistant fuel systemSTC SR02569NYInstallation of a Sky Connect Tracking SystemSTC SR11191DSInstallation of avionics shelving in RH baggage compartmentSTC SR11197DSInstallation of structural provisions for circuit breaker panel on pedestalSTC SR04453CHInstallation of Appareo Systems LLC Stratus ES & Stratus ESG ADS-B transponderSTC SR02124SEInstallation functionality. of Data Garmin Required: transponders: (1) Garmin GTX Master 345/345R Drawing with List ADS-B (MDL), Out and In 005-00734-A4, functionality;STC SR02295LAInstallation of Garmin Model G500H Flight Display SystemSTC SR02647SEInstallation of a Garmin GFC 600H Flight Control SystemSTC SR02432NYInstallation of Helitowcart Bear Paw Models BP350, BP44 or BP130STC SR11326DSInstallation of a switch flip guard on an existing Korry/Esterline pushbutton switchSTC SR09130RC-DFor AS-350B2 model, Post AMS 07-2769 ONLY). Installation of a lead acid battery RG350 at the Aircraft Standard Battery Location.STC SR02560CHInstallation of Inlet Barrier Filter systemSTC SR00359BOInstallation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights.STC SR00582DE-DInstallation of an Articulating Lightweight Loading SystemSTC SR00793LAInstallation of medical system.STC SR01193LAInstallation of seatsSTC SR01952LAInstallation of an emergency medical system.STC SR09139RCInstallation of an air medical system.STC SR00871DEInstallation of Garmin GTS 800 Traffic Avoidance System (TAS)STC SR00814DEInstallation of Garmin Helicopter Terrain Awareness and Warning System (HTAWS)STC SR00600NYInstallation of skid mounted cargo baskets.STC SR04316NYInstallation of the AS350 Survey Equipment