# Airworthiness directives: TCDS H4EU

A list on [TCDS H4EU](https://openairdocs.org/tcds/H4EU.md).

ADs whose products are models on this data sheet, matched by model and maker. Those in force first, newest first.

Page 1 of 5 · 225 ADs

- [AD 2026-17-05](https://openairdocs.org/ad/2026-17-05.md): Cabin Equipment/Furnishings · Effective Oct 2, 2026
- [AD 2026-13-01](https://openairdocs.org/ad/2026-13-01.md): Doors · Effective Aug 3, 2026 · Supersedes AD 2019-09-03, AD 2021-05-15
- [AD 2026-08-01](https://openairdocs.org/ad/2026-08-01.md): Time Limits/Maintenance Checks · Effective May 19, 2026 · Supersedes AD 2025-05-09
- [AD 2026-05-06](https://openairdocs.org/ad/2026-05-06.md): Tail rotor system · Effective Apr 17, 2026
- [AD 2026-05-11](https://openairdocs.org/ad/2026-05-11.md): Helicopter vibration analysis · Effective Apr 17, 2026 · Supersedes AD 2020-09-15
- [AD 2026-04-08](https://openairdocs.org/ad/2026-04-08.md): Main Rotor Mast/Swashplate · Effective Apr 7, 2026
- [AD 2026-05-02](https://openairdocs.org/ad/2026-05-02.md): Horizontal stabilizer structure · Effective Mar 18, 2026
- [AD 2026-04-01](https://openairdocs.org/ad/2026-04-01.md): Fire protection system · Effective Mar 10, 2026
- [AD 2025-23-01](https://openairdocs.org/ad/2025-23-01.md): Main Rotor Transmission Mount · Effective Jan 12, 2026 · Supersedes AD 2020-06-13
- [AD 2025-23-07](https://openairdocs.org/ad/2025-23-07.md): Main Rotor Transmission Mount · Effective Jan 12, 2026 · Supersedes AD 2020-06-12
- [AD 2025-24-05](https://openairdocs.org/ad/2025-24-05.md): Aircraft fuel filter/strainer · Effective Jan 12, 2026 · Supersedes AD 2024-10-13
- [AD 2025-24-03](https://openairdocs.org/ad/2025-24-03.md): Main rotor drive system · Effective Dec 26, 2025 · Supersedes AD 2019-19-13
- [AD 2025-18-09](https://openairdocs.org/ad/2025-18-09.md): Main Rotor Transmission Mount · Effective Oct 21, 2025
- [AD 2025-17-03](https://openairdocs.org/ad/2025-17-03.md): Emergency Equipment · Effective Sep 8, 2025
- [AD 2025-12-07](https://openairdocs.org/ad/2025-12-07.md): Time Limits/Maintenance Checks · Effective Aug 11, 2025
- [AD 2025-12-05](https://openairdocs.org/ad/2025-12-05.md): Time Limits/Maintenance Checks · Effective Jul 25, 2025
- [AD 2025-12-06](https://openairdocs.org/ad/2025-12-06.md): Time Limits/Maintenance Checks · Effective Jul 25, 2025
- [AD 2025-10-02](https://openairdocs.org/ad/2025-10-02.md): Electrical Connectors; and Electrical Power System Wiring · Effective Jul 8, 2025
- [AD 2025-08-06](https://openairdocs.org/ad/2025-08-06.md): Main Gearbox Oil Cooler · Effective Jun 11, 2025 · Supersedes AD 2021-09-14
- [AD 2025-07-01](https://openairdocs.org/ad/2025-07-01.md): Air Data Computer · Effective May 15, 2025
- [AD 2025-08-03](https://openairdocs.org/ad/2025-08-03.md): Time Limits/Maintenance Checks · Effective May 2, 2025
- [AD 2025-08-04](https://openairdocs.org/ad/2025-08-04.md): Time Limits/Maintenance Checks · Effective May 2, 2025
- [AD 2025-07-08](https://openairdocs.org/ad/2025-07-08.md): Tail Rotor Head · Effective Apr 25, 2025
- [AD 2025-05-08](https://openairdocs.org/ad/2025-05-08.md): Cabin equipment/furnishings · Effective Apr 21, 2025
- [AD 2025-06-07](https://openairdocs.org/ad/2025-06-07.md): Time Limits/Maintenance Checks · Effective Apr 18, 2025
- [AD 2025-03-02](https://openairdocs.org/ad/2025-03-02.md): Flight compartment equipment · Effective Mar 7, 2025
- [AD 2025-03-01](https://openairdocs.org/ad/2025-03-01.md): Main Rotor Mast/Swashplate · Effective Mar 5, 2025 · Supersedes AD 2021-04-18
- [AD 2025-03-04](https://openairdocs.org/ad/2025-03-04.md): Cabin Equipment/Furnishings · Effective Feb 19, 2025
- [AD 2024-24-51](https://openairdocs.org/ad/2024-24-51.md): Main Rotor Head · Emergency AD · Effective Dec 20, 2024
- [AD 2024-18-05](https://openairdocs.org/ad/2024-18-05.md): Fuselage Main, Frame · Effective Nov 12, 2024
- [AD 2024-17-08](https://openairdocs.org/ad/2024-17-08.md): Main Rotor System · Effective Nov 7, 2024
- [AD 2024-16-05](https://openairdocs.org/ad/2024-16-05.md): Main rotor gearbox · Effective Oct 21, 2024
- [AD 2024-02-01](https://openairdocs.org/ad/2024-02-01.md): Passenger crew doors · Effective Mar 1, 2024
- [AD 2023-20-51](https://openairdocs.org/ad/2023-20-51.md): Main Rotor Mast/Swashplate · Emergency AD · Effective Oct 31, 2023
- [AD 2023-13-08](https://openairdocs.org/ad/2023-13-08.md): Aircraft Fuel Distribution System · Effective Aug 28, 2023 · Supersedes AD 2021-05-03
- [AD 2023-08-06](https://openairdocs.org/ad/2023-08-06.md): Emergency Exits · Effective Jun 22, 2023
- [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07.md): Ground Proximity System · Effective Jun 22, 2023 · Supersedes AD 2021-23-13
- [AD 2022-23-06](https://openairdocs.org/ad/2022-23-06.md): Rotorcraft Flight Control · Effective Jan 6, 2023
- [AD 2022-24-12](https://openairdocs.org/ad/2022-24-12.md): Main Rotor Mast/Swashplate · Effective Jan 6, 2023 · Supersedes AD 2020-23-05
- [AD 2022-23-05](https://openairdocs.org/ad/2022-23-05.md): Cabin Equipment/Furnishings · Effective Jan 3, 2023
- [AD 2022-20-07](https://openairdocs.org/ad/2022-20-07.md): Main Rotor Gearbox · Effective Nov 15, 2022 · Supersedes AD 2021-10-10
- [AD 2022-18-07](https://openairdocs.org/ad/2022-18-07.md): Miscellaneous Hardware · Effective Oct 13, 2022
- [AD 2022-14-51](https://openairdocs.org/ad/2022-14-51.md): Main Rotor System · Emergency AD · Effective Aug 3, 2022
- [AD 2022-08-01](https://openairdocs.org/ad/2022-08-01.md): Fuselage main, attach fittings · Effective May 17, 2022 · Supersedes AD 2020-22-01
- [AD 2022-07-09](https://openairdocs.org/ad/2022-07-09.md): Engine Controls · Effective May 11, 2022
- [AD 2022-06-12](https://openairdocs.org/ad/2022-06-12.md): Main Rotor Drive System · Effective May 9, 2022
- [AD 2022-05-10](https://openairdocs.org/ad/2022-05-10.md): Cabin Equipment/Furnishings · Effective Apr 20, 2022
- [AD 2022-03-17](https://openairdocs.org/ad/2022-03-17.md): Tail Rotor System · Effective Mar 22, 2022
- [AD 2022-01-03](https://openairdocs.org/ad/2022-01-03.md): Fire Bottle, Portable · Effective Mar 7, 2022
- [AD 2022-03-13](https://openairdocs.org/ad/2022-03-13.md): Rotorcraft Flight Control · Effective Mar 1, 2022 · Supersedes AD 2014-21-03

Next page: https://openairdocs.org/tcds/H4EU/ads.md?page=2

## 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_directive_product.parquet' WHERE tcds_number = 'H4EU')
ORDER BY d.status = 'Historical', coalesce(d.effective_date, d.publication_date) DESC
```

This list as a web page: https://openairdocs.org/tcds/H4EU/ads

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