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.
2576624Flow Divider2576544Fuel Injection Servo (RSA-5AD1)2524864Air Bleed NozzleAB-382681CapacitorAB-163374Felt StripAB-53397Flat WasherES10-90788-5Woodruff keyAB-14268WasherAB-391213ScrewAB-391309WasherAB-382681-1CapacitorAB-50752Felt WasherAB-90788-5Woodruff KeyES10-86527Felt LubricantES10-391309Nylon WasherAB-86527LubricantAB-92815-37Retaining RingES10-391213ScrewES10-90751-18Cotter PinSL12545Plug Screen, OilAL12-70Alternator KitAL24-P70Alternator KitSL1028-BSteel Ball, Oil Pressure ReliefSL18661Seal, Shroud TubeAEL74241PLRing, Piston, Compression 5.1250 Dia.SL74241ARing, PistonSL74241A P20Ring, PistonSL74241A P10Ring, PistonES10-349248Oil Slinger2524232Flow Divider2576564Flow Divider2524859Servo Fuel Injector (RSA-10ED1)2524864Air Bleed Nozzle2576624Flow Divider2576544Fuel Injection Servo (RSA-5AD1)2576532Flow Divider3P194-AFCVacuum PumpLS03-01010Magneto FilterKA10-400574Feed thru Capacitor AssemblyES10-382971Roller BearingALY-6420LSAlternatorES48110Oil FilterES48110Oil FilterES 10-682054Block and Bearing AssemblyCF600574-0001Turbocharger AssyERZ-8011StarterES48110-1Oil FilterALT-8421AlternatorALT-8421RAlternatorES48111Oil Filter
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