Lycoming TIO-541-E1A4

Airworthiness directives that may apply · 16

Matched by model name and maker. Each AD’s applicability may narrow it by serial number, part number or configuration.

Query with SQL
duckdb -csv -c "SELECT d.ad_number, d.status, d.subject, d.effective_date
  FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d
  WHERE d.ad_id IN (SELECT ad_id FROM 'https://openairdocs.org/data/latest/faa_engine_model_directive.parquet' WHERE engine_model_code IN ('41961'))
  ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number 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.

1969In forceSuperseded2026
ADs by the year they took effect: 15 ADs
19691
19771
19781
19791
19831
19911
19921
19951
19971
20021
20091
20121
20221
20241
20261
Superseded and historical ADs · 2
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