# Airworthiness Directives; Leonardo S.p.a. Helicopters

**Action Urgency Score:** 65/100

| Field | Value |
|---|---|
| Agency | Transportation Department; Federal Aviation Administration |
| Type | Final rule |
| Action | Final rule; request for comments. |
| Published | 2026-10-01 |
| Effective | 2026-10-16 |
| Comments close | 2026-11-16 |
| Significant | No |
| CFR parts | 14 CFR 39 |
| Summary | The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This AD was prompted by a report of a nozzle exhaust duct clamp separating from the engine nozzle duct and coming to rest on the tail rotor (TR) drive shaft. This AD requires repetitively inspecting certain clamp assemblies and, depending on the results of the inspection, replacing parts. This AD also prohibits the installation of an affected clamp assembly, unless certain requirements are met. The FAA is issuing this AD to address the unsafe condition on these products. |
| Document number | 2026-20100 |

## Why this score
- Comment deadline within 30 days.
- Final rule.

Source: Federal Register API (Office of the Federal Register) (https://www.federalregister.gov/documents/2026/10/01/2026-20100/airworthiness-directives-leonardo-spa-helicopters). Last refreshed: 2026-11-04T21:40:49.974Z.
Data from the Federal Register API; the published Federal Register document is authoritative. Informational only, not legal advice.