# Airworthiness directives, 1957

FAA airworthiness directives effective in 1957: 6 ADs with their full text, status and the aircraft they apply to.

- [AD 57-10-02](https://openairdocs.org/ad/57-10-02.md): Oil Pressure Gage Line · Piper PA-23 · Published Aug 1, 1957
- [AD 57-05-03](https://openairdocs.org/ad/57-05-03.md): Elevator Push-Pull Tube · Piper PA-23 · Published Aug 1, 1957
- [AD 57-01-02](https://openairdocs.org/ad/57-01-02.md): Stabilizer Attachment Bolts · Piper PA-23 · Published Aug 1, 1957
- [AD 56-27-03](https://openairdocs.org/ad/56-27-03.md): Aileron Balance Weight Bracket · Piper PA-23 · Published Apr 11, 1957
- [AD 56-26-03](https://openairdocs.org/ad/56-26-03.md): Crankshaft · Pratt & Whitney Division Military R-985 Series, Wasp Jr. A, Wasp Jr. B-4 and 10 more · Historical · Published Apr 11, 1957 · Supersedes AD 54-22-02
- [AD 57-02-01](https://openairdocs.org/ad/57-02-01.md): Rudder horn attachment · Univair 415-C, 415-CD, 415-D and 3 more · Published Jan 1, 1957

## The whole list in SQL

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

```sql
SELECT d.ad_number, d.status, d.subject, d.makes, d.models, d.effective_date
FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d
WHERE year(coalesce(d.effective_date, d.publication_date, d.issue_date)) = 1957
ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC
```

This list as a web page: https://openairdocs.org/ad?year=1957

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