N6521
STCs that may be installed · 103
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 = '1180702')
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 = '1180702') 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
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.
Airframe · Bell 47D
STC SH176EAStewart-Warner heater.STC SH479SW6V350A engine.STC SH4-1315Seeding accessory.STC SA5-24Additional seat belt fittings to provide individual belts.STC SA5-34Northern radio 414.STC SA5-35Northern radio 414.STC SA5-38Northern radio N412.STC SH1-437Stewart-Warner combustion heater F-24, relocation of aircraft junction box and special centrifugal blower SP-151.STC SH1-509Lube oil filter PB55-1.STC SH1-512Aircooled Motors 6VS-335A turbo- supercharged engine (derated).STC SH1-67Franklin 6V-335-A engine.STC SH136SWProvisions for use of stokes litter with left cabin door propped open 22.8 inches.STC SH17ALTundra board.STC SH17WEAdapter bracket utilized as attachment for lifting a maximum external load of 928 lbs.STC SH184SWCargo sling, 800 lbs. capacity. (Restricted category only.)STC SH186SWLycoming VO-540-B1B3 engine, transmission, Bell 47-620-600-25(or -23 modified to -25 by Bell Helicopter Co.) oil cooler, Bell47-671-036-1, and associated changes. (Eligible on skiplane version of Bell 47G-2A only.)STC SH19ALCargo racks.STC SH27WEJump-step.STC SH3-473Heater.STC SH3-517Engine exhuast cabin heating system.STC SH3-561Sunshade to reduce heat and glare in cockpit.STC SH36ALTundra pads.STC SH4-1161Full flow lube oil filter 30690B with element 1A0286.STC SH4-1162Adapter assembly bomb shackle mounting fabrication and installation. (When any load or device is carried on the bomb shackle operation must be under restricted category.)STC SH4-1332Cargo sling and shackle. (When any load is carried on this shackle, operations must be under restricted category.)STC SH4-1340Spray pump 1-1/4 inch. (Restricted category only.)STC SH4-1349Spray pump 1-1/4 inch. (Restricted category only.)STC SH4-1392Pesco 1P-677 hydraulic pump.STC SH4-1419Exhaust muffler.STC SH4-1499Exhaust mufflers.STC SH4-1604100-gallon borate tank.STC SH4-1628Full flow lube oil filter 30690B with element 1A0286.STC SH4-1646Full flow lube oil filter 30690B with element 1A0286.STC SH4-1650Engine cooling fan shrouds.STC SH4-349Fabrication and installation of adapter assembly for bomb shackle mounting. (When any load or device is carried on the bomb shackle, operation must be under restricted category.)STC SH4-494Full flow lube oil filter 30690B with element 1A0286.STC SH4-612Conversion of Model 47G to Model 47G-2M.STC SH4-619Exhaust muffler.STC SH4-693Landing gear extended and electro-magnetic prospecting equipment installed.STC SH4-742Power takeoff unit at generator pad of Lycoming VO-435-A engine to drive centrifugal pump (Simplex ALCCS-1) for agricultural spraying operations.STC SH4-826Franklin 6V-335-AIA engine.STC SH58WEThree-view camera mount and Wild RC-8 camera.STC SH59WETwin flow pump on Franklin engine lower generator drive pad and re- route of right-hand tail rotor cable.STC SH61WEBowles heli-tank on previously approved bomb shackle adapter assembly.STC SH62SWLong range fuel tanks.STC SH6CESnow shoes.STC SH73WESpray system with Simplex pump.STC SH799SWWater contact sensor.STC SH7CECargo carrier.STC SH87SWDust, seeder, or spray kit 500.