Lycoming IO-540-U1A5D
PMA parts · 1,117
Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this engine model on its data sheet, so check the FAA record before relying on it. Newest first.
Query with SQL
duckdb -csv -c "SELECT drs_guid, part_number, part_name, holder, pma_number, replaces_part, supplement_date, tcds_models
FROM 'https://openairdocs.org/data/latest/faa_type_certificate_pma.parquet'
WHERE tcds_number IN ('1E4')
AND len(list_intersect(tcds_models, ['IO-540-U1A5D'])) > 0
ORDER BY supplement_date DESC, drs_guid DESC"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 drs_guid, part_number, part_name, holder, pma_number, replaces_part, supplement_date, tcds_models
FROM 'https://openairdocs.org/data/latest/faa_type_certificate_pma.parquet'
WHERE tcds_number IN ('1E4')
AND len(list_intersect(tcds_models, ['IO-540-U1A5D'])) > 0
ORDER BY supplement_date DESC, drs_guid DESCRun 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.
CFRA9099Plate, RotationSC199596WasherCFRA8987Thrust WasherSC2541801Diaphragm AssyCF2541803Diaphragm AssyCFRB35004SpringCF2531918Bushing, ThrottleCF953516-8Packing PreformedCFRA4105WasherSC177718Washer, SpringSCP22198WasherSC2538330WasherCFRA7427Relief ValveCFRA7452Lead SealSRRD7779-4CouplingSRRA9099Plate, RotationSRRA7452Lead SealCFRA15985DiaphragmSC951401Packing, PreformedSC953541-8O-RingSC2526429Packing, PreformedCF2538420Diaphragm AssyCF2541562Valve, Mix ControlSRRS16936-139Pump-BladeCF2520625SpringSC2522022PinCF253449Nut, Self LockingCF367757WasherCF951787Packing PreformedCF2541801Diaphragm AssyCF177718Washer, SpringSC951400Packing, PreformedSC2537779Spring, CompressionSC383493Plug, HexSC2539512Spring, CompressionCF2540576Bushing, MixtureCFRA7791RotorSC2541562ValveSC2523688Spring, CompressionCF365533GasketSC2525165SpringCFRA9093SpringCF2539561Seal, Servo StemCFP22198WasherCF2541265Valve, Mix ControlSRRD8935-3CouplingCF800-515- 5/16Packing with RetainerSCP4235ScrewCF953541-10Packing PreformedCF2523155Spring
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