N722HT
STCs that may be installed · 29
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 = '4450003'
UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '51504')
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 = '4450003'
UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '51504')
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 · Helicopter Transport Services CH-54B
STC SR02807SEInstallation of a Fly Away Tool boxSTC SR11923SEInstallation of Helicopter Transport Services, LLC Shock Absorber HTS-2000STC SR11810SEInstallation of Helicopter Transport Services, LLC External Load Indicating SystemSTC SR02777SEInstallation of a Load BeamSTC SR02754SEInstallation of External Cargo ContainerSTC SR02717SEInstallation of Helicopter Transport Services Remote Fuel Sump SystemSTC SR09913ACInstallation of Composite Main Rotor BladeSTC SR02684SEInstallation of Helicopter Transport Services, LLC (HTS) lightweight firefighting refill pumpSTC SR02671SEInstallation of HTS Attachable Service PodSTC SR00004SEFabrication and installation of Erickson fire fighting systemSTC SR00815SEFabrication and installation of Erickson Model Sea Snorkel systemSTC SR01209SEInstallation of Replacement Electric Starter for Auxiliary Power UnitSTC SR01241SEInstallation of Concorde RG-390E Lead Acid BatterySTC SR02503SEInstallation of Additional Telemetry Unit (ATU)STC SR00928SEFabrication of Kawak Aviation Technologies, Inc. Model YB02854 Auxiliary Hydraulic SystemSTC SR02055SEReplacement tail rotor blades, Part Numbers 65161-00001-041MII and/or 65161-00001-043MIISTC SH5653NMRe-mounting of the turbine engines and reinforcement of the associated fuselage support structure with Erickson detuned engine mounting system (DEMS).STC SR01084SEFabrication and installation of HTS-OCB-001 Electric Oil Blower AssemblySTC SR01268SEFabrication and installation of the Single Point Fixed Pendant.STC SR01279SEInstallation of the Aero-Craft Utility Hydraulic Pump, Part Number (P/N) AP6VSPLSTC SR01376SEFabrication and installation of Helicopter transport Services, LLC offset pilot seat, offset collective control, and bubble doorSTC SR01571SEFabrication and installation of Helicopter Transport Services, Inc. (HTSI) Automatic Flight Control System (AFCS)STC SR01741SEInstallation of an upgraded Fuel Quantity Indicating System.STC SR01839SERemove the components from the hydraulic sled at Station 380 and install on the sled at Station 435.5, and remove the sled at Station 380,STC SR02036SEModification of main rotor blade part number 6415-20601-041, -042, and -043STC SR02224SEInstallation of the Helicopter Transport Services, LLC (HTS) lightweight firefighting refill pump, Part Number HTS2-PUMPSTC SR01618SEFabrication and Installation of Kawak Aviation Technologies Model 36100 Sea SnorkelSTC SR00931SEFabrication of Simplex Model 314 Fire Attack SystemSTC SA4302NMInstallation of Electronics Int'l digital automatic engine analyzer.