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.
PM2403Starter AssemblyERZ‐8012Starter AssemblyPM1203Starter AssemblyERZ‐8011Starter AssemblyPM1201Starter AssemblyPM2401Starter AssemblyERB‐8011Starter AssemblyMZ‐4222Starter AssemblyALY-4520Alternator AssemblyALT-4521Alternator AssemblyALU-4521Alternator AssemblyAEL11956 (and oversizes up to .040”)Guide, Intake““SL-STD-160GasketSL-STD-1065 P002Dowel, SteppedSL-STD-1045GasketSL-STD-1821HoseSL-STD-1441GasketSL-STD-111GasketSL-STD-2180HoseSL-STD-1410NutSL-STD-1204BoltSL-STD-1925ScrewX-4086ACBearing - Ball, Single RowXA-997ACBearing, Needle .500 IDXA-998ACBearing, Needle .812 IDX-4612ACBearing, Ball, Single RowX-4130ACBearing, NeedleX-3626ACBearing - Ball, Single RowX-4087ACBearing - Ball, Single RowX-3991ACBearing - Ball, Single Row90-2502ACKit - Thru Stud PackageMHB-2012SACKit Brush Assembly90-876ACKit - Thru Stud PackageMBG-2012SACKit Brush AssemblyMZ-298ACBushing- Drive End BearingEBB-131AACBendix DriveEBB-75AACBendix DriveMZ-3005GS-ACField CoilEBB-142AACBendix DriveMHB-3005SACField CoilCFRB15985Valve AssyCFRB9085Rotor93-001-XExhaust Stud92-001Exhaust StudAEL23274Impeller, Oil Pump DrivingAEL13622Valve, IntakeAEL11796Spring, Outer ValveAEL12949Valve, IntakeAEL11956Guide, Intake
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