Lycoming IO-540-U1B5D

PMA parts · 1,069

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-U1B5D'])) > 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.

AB-160844Spring & Brush AssemblyHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-160844 · Nov 10, 2025OCOil Cooler Preheat KitHartzell Propeller LLC · PMA PQ2040CE · Modification part · Sep 12, 2025AE45BSBrush Rack AssemblyAerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALU1045BS · Aug 27, 2025AE943Rotor ShaftAerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALU-228 · Aug 27, 2025AE1003Drive End HousingAerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number A2E1003K · Aug 27, 2025AE45BS-1Brush Rack AssemblyAerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALU-1045BS · Aug 27, 2025AE944Rotor ShaftAerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALE-273 · Aug 27, 2025AE45BS-EBrush Rack AssemblyAerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALE-1045BS · Aug 27, 2025AE2241Fan AssemblyAerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number 90-2241 · Aug 27, 2025AE1132Slip Ring End HousingAerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Numbers ALK-1132AS… · Aug 27, 2025SL6Engine Preheat KitHartzell Propeller LLC · PMA PQ2040CE · Modification part · Aug 4, 2025TXPL6Engine Preheat KitHartzell Propeller LLC · PMA PQ2040CE · Modification part · Aug 4, 2025HSSEngine Preheat KitHartzell Propeller LLC · PMA PQ2040CE · Modification part · Aug 4, 2025AA48111-2Oil FilterAero Accessories LLC · PMA PQ1206CE · Replaces Aero AccessoriesAA48111Champion… · Jul 12, 2024201F-5003Fuel PumpHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Lear RomecRG17980D/MLycoming… · Jun 20, 2024ES10-35936-7ScrewHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-35936-7 · Dec 8, 2023AB-14268WasherHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-14268 · Dec 8, 2023AB-53397Washer, FlatHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-53397 · Dec 8, 2023No part numberHartzell Engine Technologies LLC · PMA PQ1383CE · Dec 1, 2023TA2927-1Engine Preheat KitHartzell Propeller LLC · PMA PQ2040CE · Modification part · Oct 31, 2023TA2927-2Engine Preheat KitHartzell Propeller LLC · PMA PQ2040CE · Modification part · Oct 31, 2023RG-72812GasketReal Gasket TN · PMA PQ1666CE · Replaces 06B21326LW-1330672812 · Aug 29, 2023KA16042HarnessKelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces M6042 · May 5, 2023KA12919Ignition Harness AssyKelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces M2919 · Oct 27, 2022KA12919Ignition Harness AssyKelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces 10-821614-6 · Oct 27, 2022ES-4019LSAlternator AssemblyHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Lycoming 32C21420 · Aug 3, 2022PM2403Starter AssemblyHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 122-24HT,122-HT/ec,122-24LS,122-24PM,12… · May 16, 2022ERZ‐8012Starter AssemblyHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Kelly… · May 16, 2022PM1203Starter AssemblyHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 122-l2HT,122-12LS,122-t2PM,122-NL,31A22… · May 16, 2022ERZ‐8011Starter AssemblyHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Kelly Aerospace MZ-4205… · May 16, 2022PM1201Starter AssemblyHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 149-12HT149-12LS,149-12PM,149-NL,31A221… · May 16, 2022PM2401Starter AssemblyHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 149-24HT,149-24HT/ec,149-24L5,149-24PM… · May 16, 2022ERB‐8011Starter AssemblyHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Kelly Aerospace MHB-4001, MHB-4002… · May 16, 2022MZ‐4222Starter AssemblyHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Lycoming LW-15571 · May 16, 2022ALY-4520Alternator AssemblyHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Electrosystems 40183 · Feb 25, 2022ALT-4521Alternator AssemblyHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Electrosystems 40165 · Feb 25, 2022ALU-4521Alternator AssemblyHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Electrosystems 40161 · Feb 25, 2022AEL11956 (and oversizes up to .040”)Guide, IntakeContinental Aerospace Technologies Inc · PMA PQ1269CE · Replaces LW11956 · Feb 4, 2022““Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · May 21, 2021SL-STD-160GasketSuperior Air Parts Inc · PMA PQ0060SW · Replaces STD-160 · May 10, 2021SL-STD-1065 P002Dowel, SteppedSuperior Air Parts Inc · PMA PQ0060SW · Replaces STD-1065-P02 · May 10, 2021SL-STD-1045GasketSuperior Air Parts Inc · PMA PQ0060SW · Replaces STD-1045 · May 10, 2021SL-STD-1821HoseSuperior Air Parts Inc · PMA PQ0060SW · Replaces STD-1821 · May 10, 2021SL-STD-1441GasketSuperior Air Parts Inc · PMA PQ0060SW · Replaces STD-1441 · May 10, 2021SL-STD-111GasketSuperior Air Parts Inc · PMA PQ0060SW · Replaces STD-111 · May 10, 2021SL-STD-2180HoseSuperior Air Parts Inc · PMA PQ0060SW · Replaces STD-2180 · May 10, 2021SL-STD-1410NutSuperior Air Parts Inc · PMA PQ0060SW · Replaces STD-1410 · May 5, 2021SL-STD-1204BoltSuperior Air Parts Inc · PMA PQ0060SW · Replaces STD-1204 · May 5, 2021SL-STD-1925ScrewSuperior Air Parts Inc · PMA PQ0060SW · Replaces STD-1925 · May 5, 2021X-4086ACBearing - Ball, Single RowHartzell Engine Technologies LLC · PMA PQ1383CE · Replaces X-4086, as used in alternators… · Sep 1, 2020
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