TCDS 4H11
STCs approved under this data sheet · 75
Current certificates first, most recently changed first.
Query with SQL
duckdb -csv -c "SELECT s.stc_number, s.description, s.holder, s.status, s.status_date FROM 'https://openairdocs.org/data/latest/faa_stc.parquet' s WHERE s.stc_number IN (SELECT stc_number FROM 'https://openairdocs.org/data/latest/faa_stc_model.parquet' WHERE tcds_number = '4H11') ORDER BY 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 s.stc_number, s.description, s.holder, s.status, s.status_date FROM 'https://openairdocs.org/data/latest/faa_stc.parquet' s WHERE s.stc_number IN (SELECT stc_number FROM 'https://openairdocs.org/data/latest/faa_stc_model.parquet' WHERE tcds_number = '4H11') ORDER BY 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.
STC SR04637CHReplacement of existing main ship battery with Lithium Ion Battery and installation of Annunciator Control
PanelSTC SH3319NMInstallation of Precise Flight Pulselite Control Unit in the
Landing /Taxi Recognition Visual Control Light system,STC SH1152NWInstallation of the Automatic Flagman Model 135 Control Stick GripSTC SR02704SEInstallation and maintenance of the Sunspot 36 and 46 series lightsSTC SR00359BOInstallation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights.STC SR01845SEInstallation of a barrier air filtration systemSTC SR00420NYInstallation of Airwolf remote mounted engine oil filter Model AFC-600STC SR01802WITo allow the use of UL91 or UL94 (minimum) grade aviation fuel per ASTM D7547.STC SR02394AKReplacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting systemSTC SA00068SEInstallation of fuel flow/pressure instruments. (W/TSIO-360-MB1)STC SA2693NMInstallation of Electronics International digital volt/amp gauges and accessories.STC SH381NWInstallation and maintenance of engine auto reignition system. (UH-12E modified per STC SH178WE)STC SH476NWInstallation of an agricultural spray system.STC SA593CHInstall Champion SlickSTART magneto booster system.STC SA02033ATModification to install an air-oil separator to prevent oil from being aspirated from the engine breather line.STC SH178WEInstallation of Allison 250-C20/250-C20B engine and related changes. (UH-12E-L (4 place))STC SH248NWInstallation and maintenance of exhaust ejector engine oil cooler system. (UH-12E modified per STC SH178WE)STC SH288NWInstallation of Hiller landing gear float kit No. 44012. (UH-12E modified per STC SH178WE)STC SH296NWInstallation of Hiller auxiliary fuel tanks kit No. 72041. (UH-12E modified per STC SH178WE)STC SH298NWInstallation and maintenance of a cabin heater system. (UH-12E modified per STC SH178WE)STC SH300NWInstallation of Soloy cargo racks.STC SH322NWInstallation of a Bendix fuel control/power governor system on the Allison 250-C20 turbine powered Hiller UH-12E rotorcraft. (UH-12E modified per STC SH178WE)STC SH339NWInstallation of transmission oil cooling system on the Allison250-C20 turbine powered Hiller UH-12E rotorcraft. (UH-12E modified per STC SH178WE)STC SH506NWInstallation of cargo release pedal.STC SH560NWInstallation and maintenance of engine inlet air cleaner system.STC SH634NWInstallation of Tundra Pads.STC SA01258SEInstallation of the Automatic Flagman Dispenser Models in accordance with Automatic Flagman Master Drawing Lists specified in attached AML, or later FAA approved revision.This STC supercedes several existing STC s as listed in the notes on the attached AML.STC SA02520ATInstallation of M-20 Oil Separator, model 600-WP.STC SH849NWInstallation of North American Industries, Inc., Model No. 5 Automatic FlagmanSTC SH201WEInstallation of stirrup assemblies to directional control pedals for operation by handicapped pilot. (US ARMY OH-13E 205A)STC SA2687NMInstallation of Truboplus/ Electronics Int'l gauges and switches.STC SH12CEReplace existing engine induction air filter with AC Spark Plug Filter.STC SH767NWInstallation of Chadwick Model C-512S spray system.STC SR00135LAInstallation of Yehnert Tail Rotor Blades YH-278 as replacements for Hiller Tail Rotor Blades 55073.STC SA1626NM PAGE 1Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series)STC SH5729NMFull flow oil filter systemSTC SA2350NM PAGE 1Installation of Electronics International Inc digital carburetor/outside air temperature gaugesSTC SH300GLInstallation of Facet Enterprises engine lubrication system scavenge filter.STC SH2763SOInstallation of control rotor safety cable.STC SA4302NMInstallation of Electronics Int'l digital automatic engine analyzer.STC SH2611SOInstallation of cargo rack.STC SA3862NM PAGE 1Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories.STC SH4173NMInstallation of Simplex Model 7600 modular electrical system. (US ARMY OH-13E M74A)STC SH3362NMInstallation of a Tail Rotor Blade Protective CoatingSTC SA2190NM PAGE 1Installation of electronics International Digital Volt/Amp Gauges and Accessories.STC SH4997SWInstallation of Lycoming TIVO-540-A2A engineSTC SH302NMInstallation of two Albany Int. dispersion pads, Drawing No. 21940 or 21961.STC SH1014NWSimplex Model 4600 spray systemSTC SH1147NWInstallation of a Chadwick Spray SystemSTC SH887NWSimplex Model 4650 spray system - agricultural.
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