# Airworthiness directives that may apply: Lockheed AT 18

A list on [Lockheed AT 18](https://openairdocs.org/model/lockheed-at-18.md).

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

- [AD 2026-13-02](https://openairdocs.org/ad/2026-13-02.md): Navigation · Effective Jul 1, 2026
- [AD 2023-10-02](https://openairdocs.org/ad/2023-10-02.md): Indicating/Recording System, Navigation · Effective May 26, 2023 · Supersedes AD 2021-23-12
- [AD 2005-01-19](https://openairdocs.org/ad/2005-01-19.md): Mode S transponders · Effective Feb 23, 2005 · Supersedes AD 2004-10-15
- [AD 99-19-08](https://openairdocs.org/ad/99-19-08.md): AFM - Deicing · Effective Dec 27, 1999
- [AD 98-04-32](https://openairdocs.org/ad/98-04-32.md): AFM - Limitations Section - Icing · Effective Mar 25, 1998
- [AD 93-14-12](https://openairdocs.org/ad/93-14-12.md): Crewmember Protective Breathing Equipment Units · Effective Sep 2, 1993
- [AD 77-10-03](https://openairdocs.org/ad/77-10-03.md): Fire Resistant Prop Feathering System · Effective Jun 16, 1977
- [AD 66-02-01](https://openairdocs.org/ad/66-02-01.md): Air Conditioners · Effective Feb 10, 1966
- [AD 63-21-04](https://openairdocs.org/ad/63-21-04.md): Elevator Trim Tabs · Effective Jan 10, 1964
- [AD 63-03-03](https://openairdocs.org/ad/63-03-03.md): Main Landing Gear Drag Strut · Effective Mar 5, 1963
- [AD 61-22-06](https://openairdocs.org/ad/61-22-06.md): Elevator Control Mast Castings · Effective Nov 21, 1961
- [AD 60-21-02](https://openairdocs.org/ad/60-21-02.md): Carburetor Preheat Modification
- [AD 59-16-02](https://openairdocs.org/ad/59-16-02.md): Stabilizer Spar
- [AD 58-11-03](https://openairdocs.org/ad/58-11-03.md): Rudder Cable Attachment
- [AD 58-11-02](https://openairdocs.org/ad/58-11-02.md): Landing Gear Drag Strut Yoke
- [AD 58-08-03](https://openairdocs.org/ad/58-08-03.md): CB Fire Extinguisher System
- [AD 57-23-01](https://openairdocs.org/ad/57-23-01.md): Vacuum System Fusible Plug
- [AD 52-08-01](https://openairdocs.org/ad/52-08-01.md): Fuel Tank Seal
- [AD 48-42-02](https://openairdocs.org/ad/48-42-02.md): Fire Prevention Modification
- [AD 47-43-11](https://openairdocs.org/ad/47-43-11.md): Elevator Push-Pull Rod Bolts
- [AD 47-43-10](https://openairdocs.org/ad/47-43-10.md): Fire Extinguisher Bottle Rework
- [AD 46-13-03](https://openairdocs.org/ad/46-13-03.md): Hopper Oil Tanks
- [AD 46-13-02](https://openairdocs.org/ad/46-13-02.md): Dual Fuel System
- [AD 46-13-01](https://openairdocs.org/ad/46-13-01.md): Landing Gear Hose Ferrules

## 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.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_aircraft_model_directive.parquet' WHERE aircraft_model_code IN ('5261558'))
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/model/lockheed-at-18/ads

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