# Proposed ADs that cite it: Austro Engine Temporary Revision MM-TR-MDC-E4-454

A list on [Austro Engine Temporary Revision MM-TR-MDC-E4-454](https://openairdocs.org/service-documents/austro-engine/tr-mm-tr-mdc-e4-454.md).

Newest first, with the revision each cites, as OpenAirDocs read it from the records’ text. OpenAirDocs read these citations from the records’ text, so one can be misread: check it against the record. A newer revision may exist that no record cites.

- [NPRM FAA-2019-1113](https://openairdocs.org/proposed/FAA-2019-1113.md): Austro Engine · Published Mar 20, 2020 · No revision named

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT coalesce(p.docket_number, p.fr_document_number, p.proposal_id) AS docket, max(p.publication_date) AS published, string_agg(DISTINCT c.revision, ', ' ORDER BY c.revision) AS revisions,
  bool_or(c.incorporated_by_reference) AS incorporated_by_reference, bool_or(c.in_regulatory_text) AS in_regulatory_text
FROM 'https://openairdocs.org/data/latest/service_document_citation.parquet' c JOIN 'https://openairdocs.org/data/latest/faa_proposed_directive.parquet' p ON p.proposal_id = c.record_id
WHERE c.document_id = 'austro-engine/tr-mm-tr-mdc-e4-454' AND c.record_type = 'faa_proposed_directive'
GROUP BY ALL
ORDER BY max(c.record_date) DESC
```

This list as a web page: https://openairdocs.org/service-documents/austro-engine/tr-mm-tr-mdc-e4-454/proposed

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.