MD Helicopters service documents: with those not held

duckdb -csv -c "SELECT document_id, issuer, type_label, number, title, latest_revision, latest_revision_date, has_file
  FROM 'https://openairdocs.org/data/latest/service_document.parquet'
  WHERE issuer_kind <> 'authority'
    AND issuer_key = 'md-helicopters'
  ORDER BY type_label, 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 document_id, issuer, type_label, number, title, latest_revision, latest_revision_date, has_file
FROM 'https://openairdocs.org/data/latest/service_document.parquet'
WHERE issuer_kind <> 'authority'
  AND issuer_key = 'md-helicopters'
ORDER BY type_label, 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.