# Airworthiness directives that may apply: N508DN

A list on [N508DN](https://openairdocs.org/aircraft/N508DN.md).

Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.

- [AD 2026-20-05](https://openairdocs.org/ad/2026-20-05.md): Stabilizers · Effective Nov 5, 2026 · Supersedes AD 2021-03-08
- [AD 2026-14-04](https://openairdocs.org/ad/2026-14-04.md): Fuselage · Effective Aug 14, 2026 · Supersedes AD 2025-10-12
- [AD 2026-12-05](https://openairdocs.org/ad/2026-12-05.md): Flight controls · Effective Jul 20, 2026
- [AD 2026-12-04](https://openairdocs.org/ad/2026-12-04.md): Wings · Effective Jul 14, 2026
- [AD 2026-11-08](https://openairdocs.org/ad/2026-11-08.md): Wings · Effective Jul 9, 2026
- [AD 2026-13-02](https://openairdocs.org/ad/2026-13-02.md): Navigation · Effective Jul 1, 2026
- [AD 2026-09-14](https://openairdocs.org/ad/2026-09-14.md): Oxygen · Effective Jun 18, 2026
- [AD 2026-05-12](https://openairdocs.org/ad/2026-05-12.md): Wings · Effective Mar 27, 2026
- [AD 2026-03-01](https://openairdocs.org/ad/2026-03-01.md): Flight controls · Effective Mar 9, 2026
- [AD 2026-02-07](https://openairdocs.org/ad/2026-02-07.md): Landing Gear · Effective Mar 9, 2026
- [AD 2025-25-12](https://openairdocs.org/ad/2025-25-12.md): Flight Controls · Effective Jan 13, 2026 · Supersedes AD 2025-13-12
- [AD 2025-22-01](https://openairdocs.org/ad/2025-22-01.md): Landing Gear · Effective Jan 2, 2026
- [AD 2025-20-12](https://openairdocs.org/ad/2025-20-12.md): Time Limits/Maintenance Checks · Effective Dec 30, 2025 · Supersedes AD 2023-02-18
- [AD 2025-20-05](https://openairdocs.org/ad/2025-20-05.md): Wings · Effective Dec 30, 2025 · Supersedes AD 2023-14-09
- [AD 2025-05-14 R1](https://openairdocs.org/ad/2025-05-14-R1.md): Pneumatic · Effective Nov 21, 2025 · Supersedes AD 2025-05-14
- [AD 2025-18-06](https://openairdocs.org/ad/2025-18-06.md): Oxygen · Effective Oct 23, 2025 · Supersedes AD 2020-02-14
- [AD 2025-19-02](https://openairdocs.org/ad/2025-19-02.md): Equipment/Furnishings · Effective Sep 30, 2025
- [AD 2025-14-09](https://openairdocs.org/ad/2025-14-09.md): Wings · Effective Aug 25, 2025 · Supersedes AD 2022-27-01
- [AD 2025-14-06](https://openairdocs.org/ad/2025-14-06.md): Nacelles/pylons · Effective Aug 25, 2025
- [AD 2025-13-03](https://openairdocs.org/ad/2025-13-03.md): Powerplant · Effective Aug 5, 2025
- [AD 2025-14-02](https://openairdocs.org/ad/2025-14-02.md): Engine Controls · Effective Jul 25, 2025
- [AD 2025-11-12](https://openairdocs.org/ad/2025-11-12.md): Oxygen · Effective Jul 15, 2025 · Supersedes AD 2020-03-14
- [AD 2025-11-08](https://openairdocs.org/ad/2025-11-08.md): Landing gear · Effective Jul 11, 2025
- [AD 2025-10-09](https://openairdocs.org/ad/2025-10-09.md): Landing Gear · Effective Jul 2, 2025
- [AD 2025-10-03](https://openairdocs.org/ad/2025-10-03.md): Time Limits/Maintenance Checks · Effective Jun 26, 2025
- [AD 2025-07-05](https://openairdocs.org/ad/2025-07-05.md): Fuselage · Effective May 13, 2025
- [AD 2024-22-08](https://openairdocs.org/ad/2024-22-08.md): Equipment/furnishings · Effective Dec 31, 2024
- [AD 2024-20-01](https://openairdocs.org/ad/2024-20-01.md): Equipment/furnishings · Effective Nov 29, 2024 · Supersedes AD 2023-07-13
- [AD 2024-19-04](https://openairdocs.org/ad/2024-19-04.md): Nacelles/pylons · Effective Nov 29, 2024
- [AD 2024-19-03](https://openairdocs.org/ad/2024-19-03.md): Time Limits/Maintenance Checks · Effective Nov 15, 2024 · Supersedes AD 2023-04-05, AD 2023-12-03
- [AD 2024-16-17](https://openairdocs.org/ad/2024-16-17.md): Auto Flight · Effective Oct 30, 2024 · Supersedes AD 2022-13-11
- [AD 2024-14-06](https://openairdocs.org/ad/2024-14-06.md): Pneumatic · Effective Sep 25, 2024
- [AD 2024-11-01](https://openairdocs.org/ad/2024-11-01.md): Electrical Power · Effective Jul 3, 2024 · Supersedes AD 2021-21-02
- [AD 2024-08-08](https://openairdocs.org/ad/2024-08-08.md): Electrical Power · Effective Jun 6, 2024 · Supersedes AD 2021-20-08
- [AD 2024-08-01](https://openairdocs.org/ad/2024-08-01.md): Wings · Effective Jun 6, 2024
- [AD 2024-06-12](https://openairdocs.org/ad/2024-06-12.md): Time Limits/Maintenance Checks · Effective Jun 5, 2024 · Supersedes AD 2021-24-20
- [AD 2024-03-03](https://openairdocs.org/ad/2024-03-03.md): Equipment/Furnishings · Effective Apr 16, 2024
- [AD 2024-01-05](https://openairdocs.org/ad/2024-01-05.md): Time Limits/Maintenance Checks · Effective Mar 7, 2024 · Supersedes AD 2022-01-07
- [AD 2023-25-15](https://openairdocs.org/ad/2023-25-15.md): Wings · Effective Feb 7, 2024 · Supersedes AD 2020-24-12
- [AD 2023-22-09](https://openairdocs.org/ad/2023-22-09.md): Doors · Effective Dec 26, 2023
- [AD 2023-22-08](https://openairdocs.org/ad/2023-22-08.md): Fuselage · Effective Nov 20, 2023 · Supersedes AD 2023-04-12
- [AD 2023-20-04](https://openairdocs.org/ad/2023-20-04.md): Nacelles/pylons · Effective Nov 9, 2023
- [AD 2023-13-13](https://openairdocs.org/ad/2023-13-13.md): Hydraulic Power · Effective Sep 5, 2023
- [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 2023-06-12](https://openairdocs.org/ad/2023-06-12.md): Pneumatic · Effective May 18, 2023 · Supersedes AD 2021-08-08
- [AD 2023-05-07](https://openairdocs.org/ad/2023-05-07.md): Oxygen · Effective May 12, 2023 · Supersedes AD 2020-21-07
- [AD 2023-04-07](https://openairdocs.org/ad/2023-04-07.md): Air conditioning · Effective Apr 10, 2023
- [AD 2023-04-04](https://openairdocs.org/ad/2023-04-04.md): Time Limits/Maintenance Checks · Effective Apr 10, 2023 · Supersedes AD 2020-15-20
- [AD 2023-03-17](https://openairdocs.org/ad/2023-03-17.md): Fuselage · Effective Apr 7, 2023
- [AD 2023-03-07](https://openairdocs.org/ad/2023-03-07.md): Fuselage · Effective Apr 3, 2023
- [AD 2023-03-05](https://openairdocs.org/ad/2023-03-05.md): Time Limits/Maintenance Checks · Effective Mar 23, 2023 · Supersedes AD 2022-09-06
- [AD 2023-02-14](https://openairdocs.org/ad/2023-02-14.md): Fuel System · Effective Mar 23, 2023
- [AD 2023-02-15](https://openairdocs.org/ad/2023-02-15.md): Landing Gear · Effective Feb 21, 2023
- [AD 2022-25-22](https://openairdocs.org/ad/2022-25-22.md): Fire protection · Effective Jan 23, 2023
- [AD 2022-25-02](https://openairdocs.org/ad/2022-25-02.md): Flight Controls · Effective Jan 23, 2023 · Supersedes AD 2020-18-04
- [AD 2022-25-17](https://openairdocs.org/ad/2022-25-17.md): Pneumatic · Effective Jan 13, 2023 · Supersedes AD 2022-07-10
- [AD 2022-25-09](https://openairdocs.org/ad/2022-25-09.md): Wings · Effective Jan 6, 2023
- [AD 2022-22-01](https://openairdocs.org/ad/2022-22-01.md): Hydraulic power · Effective Dec 21, 2022
- [AD 2022-20-13](https://openairdocs.org/ad/2022-20-13.md): Fuselage · Effective Dec 13, 2022
- [AD 2022-18-08](https://openairdocs.org/ad/2022-18-08.md): Equipment/furnishings · Effective Oct 18, 2022
- [AD 2022-17-07](https://openairdocs.org/ad/2022-17-07.md): Equipment/furnishings · Effective Oct 13, 2022
- [AD 2022-13-13](https://openairdocs.org/ad/2022-13-13.md): Doors · Effective Aug 9, 2022
- [AD 2022-13-11](https://openairdocs.org/ad/2022-13-11.md): Auto Flight · Effective Aug 9, 2022
- [AD 2022-13-19](https://openairdocs.org/ad/2022-13-19.md): Flight controls · Effective Jul 12, 2022 · Supersedes AD 2022-11-03
- [AD 2022-09-12](https://openairdocs.org/ad/2022-09-12.md): Flight Controls · Effective Jun 21, 2022
- [AD 2022-05-07](https://openairdocs.org/ad/2022-05-07.md): Landing gear · Effective Apr 11, 2022
- [AD 2022-03-22](https://openairdocs.org/ad/2022-03-22.md): Fuselage · Effective Mar 29, 2022 · Supersedes AD 2019-26-01
- [AD 2022-03-14](https://openairdocs.org/ad/2022-03-14.md): Landing gear · Effective Mar 21, 2022
- [AD 2022-03-10](https://openairdocs.org/ad/2022-03-10.md): Wings · Effective Mar 17, 2022
- [AD 2021-22-18](https://openairdocs.org/ad/2021-22-18.md): Doors · Effective Dec 29, 2021
- [AD 2021-22-07](https://openairdocs.org/ad/2021-22-07.md): Fire Bottle, Portable · Effective Nov 18, 2021
- [AD 2021-20-04](https://openairdocs.org/ad/2021-20-04.md): Instruments · Effective Nov 17, 2021
- [AD 2021-15-08](https://openairdocs.org/ad/2021-15-08.md): Doors · Effective Sep 9, 2021
- [AD 2021-10-12](https://openairdocs.org/ad/2021-10-12.md): Instruments · Effective Jul 29, 2021 · Supersedes AD 2020-09-14
- [AD 2021-04-11](https://openairdocs.org/ad/2021-04-11.md): Air Conditioning, Flight Control and Guidance System · Effective May 11, 2021 · Supersedes AD 2020-01-10
- [AD 2021-03-08](https://openairdocs.org/ad/2021-03-08.md): Stabilizers · Effective Apr 30, 2021
- [AD 2021-04-14](https://openairdocs.org/ad/2021-04-14.md): Fuselage · Effective Apr 9, 2021
- [AD 2021-02-12](https://openairdocs.org/ad/2021-02-12.md): Equipment/furnishings · Effective Mar 30, 2021
- [AD 2021-02-10](https://openairdocs.org/ad/2021-02-10.md): Doors · Effective Mar 30, 2021
- [AD 2020-26-21](https://openairdocs.org/ad/2020-26-21.md): Fuselage · Effective Feb 3, 2021
- [AD 2020-22-08](https://openairdocs.org/ad/2020-22-08.md): Communications, Cabin systems · Effective Nov 19, 2020
- [AD 2020-21-08](https://openairdocs.org/ad/2020-21-08.md): Exhaust · Effective Nov 18, 2020
- [AD 2020-20-16](https://openairdocs.org/ad/2020-20-16.md): Flight controls · Effective Nov 12, 2020 · Supersedes AD 2018-17-05
- [AD 2020-18-15](https://openairdocs.org/ad/2020-18-15.md): Exhaust · Effective Oct 26, 2020
- [AD 2020-18-03](https://openairdocs.org/ad/2020-18-03.md): Equipment/Furnishings · Effective Oct 8, 2020
- [AD 2020-15-10](https://openairdocs.org/ad/2020-15-10.md): Fuselage · Effective Aug 14, 2020
- [AD 2020-04-17](https://openairdocs.org/ad/2020-04-17.md): Doors · Effective May 4, 2020
- [AD 2020-05-18](https://openairdocs.org/ad/2020-05-18.md): Wings · Effective Apr 20, 2020
- [AD 2019-25-19](https://openairdocs.org/ad/2019-25-19.md): Doors · Effective Feb 20, 2020
- [AD 2019-24-10](https://openairdocs.org/ad/2019-24-10.md): Electric and electronic common installation · Effective Jan 24, 2020
- [AD 2019-22-14](https://openairdocs.org/ad/2019-22-14.md): Fuselage · Effective Dec 31, 2019
- [AD 2019-21-07](https://openairdocs.org/ad/2019-21-07.md): Fuselage · Effective Nov 21, 2019
- [AD 2019-20-01](https://openairdocs.org/ad/2019-20-01.md): Engine Exhaust · Effective Nov 21, 2019 · Supersedes AD 2018-26-07
- [AD 2019-19-14](https://openairdocs.org/ad/2019-19-14.md): Flight controls · Effective Nov 14, 2019
- [AD 2019-19-05](https://openairdocs.org/ad/2019-19-05.md): Doors · Effective Nov 13, 2019
- [AD 2019-16-08](https://openairdocs.org/ad/2019-16-08.md): Flight controls · Effective Nov 5, 2019
- [AD 2019-17-04](https://openairdocs.org/ad/2019-17-04.md): Equipment/ furnishings · Effective Sep 27, 2019 · Supersedes AD 2019-06-09
- [AD 2019-16-03](https://openairdocs.org/ad/2019-16-03.md): Power Plant · Effective Sep 6, 2019
- [AD 2019-12-16](https://openairdocs.org/ad/2019-12-16.md): Fuselage · Effective Jul 23, 2019
- [AD 2019-11-01](https://openairdocs.org/ad/2019-11-01.md): Stabilizers · Effective Jun 28, 2019 · Supersedes AD 2018-25-12
- [AD 2019-05-10](https://openairdocs.org/ad/2019-05-10.md): Flight Controls · Effective Apr 8, 2019
- [AD 2019-03-08](https://openairdocs.org/ad/2019-03-08.md): Hydraulic power · Effective Apr 2, 2019
- [AD 2018-26-04](https://openairdocs.org/ad/2018-26-04.md): Pneumatic · Effective Jan 14, 2019
- [AD 2018-25-05](https://openairdocs.org/ad/2018-25-05.md): Doors · Effective Jan 14, 2019
- [AD 2018-23-12](https://openairdocs.org/ad/2018-23-12.md): Equipment/furnishings · Effective Dec 28, 2018
- [AD 2018-23-10](https://openairdocs.org/ad/2018-23-10.md): Water/waste · Effective Dec 19, 2018
- [AD 2018-23-07](https://openairdocs.org/ad/2018-23-07.md): Fuselage · Effective Dec 19, 2018
- [AD 2018-23-05](https://openairdocs.org/ad/2018-23-05.md): Wings · Effective Nov 23, 2018
- [AD 2018-22-13](https://openairdocs.org/ad/2018-22-13.md): Flight controls · Effective Nov 23, 2018
- [AD 2018-20-10](https://openairdocs.org/ad/2018-20-10.md): Doors · Effective Nov 15, 2018
- [AD 2018-19-19](https://openairdocs.org/ad/2018-19-19.md): Hydraulic Power · Effective Oct 29, 2018
- [AD 2018-17-24](https://openairdocs.org/ad/2018-17-24.md): Fuselage/Stabilizers · Effective Oct 18, 2018
- [AD 2018-17-25](https://openairdocs.org/ad/2018-17-25.md): Flight Controls · Effective Sep 28, 2018
- [AD 2018-18-04](https://openairdocs.org/ad/2018-18-04.md): Fire Protection · Effective Sep 14, 2018
- [AD 2018-11-11](https://openairdocs.org/ad/2018-11-11.md): Wings · Effective Jun 20, 2018
- [AD 2018-07-12](https://openairdocs.org/ad/2018-07-12.md): Flight controls · Effective Apr 24, 2018
- [AD 2017-18-18](https://openairdocs.org/ad/2017-18-18.md): Integrated Modular Avionics. · Effective Sep 26, 2017
- [AD 2026-13-06](https://openairdocs.org/ad/2026-13-06.md): Engine (Turbine/Turboprop), Engine Fuel Distribution · Effective Jul 17, 2026 · Supersedes AD 2024-25-10
- [AD 2023-04-14](https://openairdocs.org/ad/2023-04-14.md): Engine Mount Sector · Effective Apr 14, 2023 · Supersedes AD 2020-12-01
- [AD 2022-13-17](https://openairdocs.org/ad/2022-13-17.md): Engine Turbine/Turboprop · Effective Aug 12, 2022 · Supersedes AD 2021-15-01
- [AD 2021-17-11](https://openairdocs.org/ad/2021-17-11.md): Turbine Engine Compressor Section · Effective Oct 12, 2021
- [AD 2020-16-17](https://openairdocs.org/ad/2020-16-17.md): Turbine Section · Effective Sep 21, 2020
- [AD 2017-19-19](https://openairdocs.org/ad/2017-19-19.md): Turbine Engine Compressor Section · Effective Oct 11, 2017
- [AD 2017-17-07](https://openairdocs.org/ad/2017-17-07.md): Turbine/Turboprop Engine/Turbine Section · Effective Sep 12, 2017
- [AD 2025-13-12](https://openairdocs.org/ad/2025-13-12.md): Flight Controls · Historical · Effective Jul 25, 2025 · Replaced by AD 2025-25-12
- [AD 2025-10-12](https://openairdocs.org/ad/2025-10-12.md): Fuselage · Historical · Effective Jul 2, 2025 · Replaced by AD 2026-14-04
- [AD 2025-05-14](https://openairdocs.org/ad/2025-05-14.md): Pneumatic · Historical · Effective Apr 22, 2025 · Replaced by AD 2025-05-14 R1
- [AD 2023-14-09](https://openairdocs.org/ad/2023-14-09.md): Wings · Historical · Effective Sep 7, 2023 · Replaced by AD 2025-20-05
- [AD 2023-12-03](https://openairdocs.org/ad/2023-12-03.md): Time Limits/Maintenance Checks · Historical · Effective Aug 7, 2023 · Replaced by AD 2024-19-03
- [AD 2023-07-13](https://openairdocs.org/ad/2023-07-13.md): Equipment/furnishings · Historical · Effective Jun 20, 2023 · Replaced by AD 2024-20-01
- [AD 2023-04-05](https://openairdocs.org/ad/2023-04-05.md): Time Limits/Maintenance Checks · Historical · Effective Apr 10, 2023 · Replaced by AD 2024-19-03
- [AD 2023-02-18](https://openairdocs.org/ad/2023-02-18.md): Time Limits/Maintenance Checks · Historical · Effective Mar 23, 2023 · Replaced by AD 2025-20-12
- [AD 2023-04-12](https://openairdocs.org/ad/2023-04-12.md): Fuselage · Historical · Effective Mar 14, 2023 · Replaced by AD 2023-22-08
- [AD 2022-27-01](https://openairdocs.org/ad/2022-27-01.md): Wings · Historical · Effective Feb 2, 2023 · Replaced by AD 2025-14-09
- [AD 2022-17-09](https://openairdocs.org/ad/2022-17-09.md): Wings · Historical · Effective Nov 29, 2022 · Replaced by AD 2023-14-09
- [AD 2022-09-11](https://openairdocs.org/ad/2022-09-11.md): Time Limits/Maintenance Checks · Historical · Effective Jun 21, 2022 · Supersedes AD 2021-14-17
- [AD 2022-09-06](https://openairdocs.org/ad/2022-09-06.md): Time Limits/Maintenance Checks · Historical · Effective Jun 20, 2022 · Replaced by AD 2023-03-05
- [AD 2022-09-03](https://openairdocs.org/ad/2022-09-03.md): Time Limits/Maintenance Checks · Historical · Effective Jun 16, 2022 · Replaced by AD 2023-02-18
- [AD 2022-11-03](https://openairdocs.org/ad/2022-11-03.md): Flight controls · Historical · Effective Jun 3, 2022 · Replaced by AD 2022-13-19
- [AD 2022-07-10](https://openairdocs.org/ad/2022-07-10.md): Pneumatic · Historical · Effective Apr 20, 2022 · Replaced by AD 2022-25-17
- [AD 2022-01-07](https://openairdocs.org/ad/2022-01-07.md): Time Limits/Maintenance Checks · Historical · Effective Mar 8, 2022 · Replaced by AD 2024-01-05
- [AD 2021-24-20](https://openairdocs.org/ad/2021-24-20.md): Flight controls · Historical · Effective Jan 27, 2022 · Replaced by AD 2024-06-12
- [AD 2021-16-03](https://openairdocs.org/ad/2021-16-03.md): Wings · Historical · Effective Sep 30, 2021 · Replaced by AD 2022-17-09
- [AD 2021-13-06](https://openairdocs.org/ad/2021-13-06.md): Time Limits/Maintenance Checks · Historical · Effective Sep 3, 2021 · Replaced by AD 2022-09-06
- [AD 2021-11-23](https://openairdocs.org/ad/2021-11-23.md): Time Limits/Maintenance checks, Hydraulic power · Historical · Effective Sep 3, 2021 · Replaced by AD 2022-01-07
- [AD 2021-14-17](https://openairdocs.org/ad/2021-14-17.md): Time Limits/Maintenance Checks · Historical · Effective Aug 23, 2021 · Replaced by AD 2022-09-11
- [AD 2021-08-08](https://openairdocs.org/ad/2021-08-08.md): Pneumatic · Historical · Effective May 25, 2021 · Replaced by AD 2023-06-12
- [AD 2020-24-12](https://openairdocs.org/ad/2020-24-12.md): Wings · Historical · Effective Jan 5, 2021 · Replaced by AD 2023-25-15
- [AD 2020-21-07](https://openairdocs.org/ad/2020-21-07.md): Oxygen · Historical · Effective Nov 18, 2020 · Replaced by AD 2023-05-07
- [AD 2020-21-06](https://openairdocs.org/ad/2020-21-06.md): Time Limits/Maintenance Checks · Historical · Effective Nov 18, 2020 · Replaced by AD 2022-09-03
- [AD 2020-15-20](https://openairdocs.org/ad/2020-15-20.md): Time Limits/Maintenance Checks · Historical · Effective Oct 2, 2020 · Replaced by AD 2023-04-04
- [AD 2020-18-04](https://openairdocs.org/ad/2020-18-04.md): Flight controls · Historical · Effective Sep 18, 2020 · Replaced by AD 2022-25-02
- [AD 2020-09-14](https://openairdocs.org/ad/2020-09-14.md): Instruments · Historical · Effective Jun 4, 2020 · Replaced by AD 2021-10-12
- [AD 2020-03-14](https://openairdocs.org/ad/2020-03-14.md): Oxygen · Historical · Effective Apr 2, 2020 · Replaced by AD 2025-11-12
- [AD 2020-02-14](https://openairdocs.org/ad/2020-02-14.md): Oxygen · Historical · Effective Mar 12, 2020 · Replaced by AD 2025-18-06
- [AD 2020-01-10](https://openairdocs.org/ad/2020-01-10.md): Electrical power · Historical · Effective Mar 12, 2020 · Replaced by AD 2021-04-11
- [AD 2019-26-01](https://openairdocs.org/ad/2019-26-01.md): Fuselage · Historical · Effective Feb 28, 2020 · Replaced by AD 2022-03-22
- [AD 2020-03-12](https://openairdocs.org/ad/2020-03-12.md): Engine controls · Historical · Effective Feb 14, 2020 · Replaced by AD 2020-09-14
- [AD 2019-06-09](https://openairdocs.org/ad/2019-06-09.md): Equipment/ furnishings · Historical · Effective Apr 26, 2019 · Replaced by AD 2019-17-04
- [AD 2019-03-11](https://openairdocs.org/ad/2019-03-11.md): Time Limits/Maintenance Checks · Historical · Effective Mar 29, 2019 · Replaced by AD 2020-15-20
- [AD 2018-25-12](https://openairdocs.org/ad/2018-25-12.md): Fuselage; Stabilizers · Historical · Effective Jan 18, 2019 · Replaced by AD 2019-11-01
- [AD 2018-26-07](https://openairdocs.org/ad/2018-26-07.md): Engine Exhaust · Historical · Effective Jan 15, 2019 · Replaced by AD 2019-20-01
- [AD 2018-17-05](https://openairdocs.org/ad/2018-17-05.md): Flight controls · Historical · Effective Aug 30, 2018 · Replaced by AD 2020-20-16
- [AD 2021-15-01](https://openairdocs.org/ad/2021-15-01.md): Engine Turbine/Turboprop · Historical · Effective Aug 16, 2021 · Replaced by AD 2022-13-17
- [AD 2020-12-01](https://openairdocs.org/ad/2020-12-01.md): Engine Mount Section · Historical · Effective Jul 13, 2020 · Replaced by AD 2023-04-14

## 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, m.matched_by
FROM (
  SELECT ad_id, min(rank) AS rank, arg_min(matched_by, rank) AS matched_by
  FROM (SELECT ad_id, 1 AS rank, 'airframe' AS matched_by FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_directive.parquet' WHERE aircraft_model_code = '3940050'
    UNION ALL SELECT ad_id, 2, 'engine' FROM 'https://openairdocs.org/data/latest/faa_engine_model_directive.parquet' WHERE engine_model_code = '54599')
  GROUP BY ad_id
) m JOIN 'https://openairdocs.org/data/latest/faa_directive.parquet' d USING (ad_id)
ORDER BY d.status = 'Historical', m.rank, coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC
```

This list as a web page: https://openairdocs.org/aircraft/N508DN/ads

---
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