# Airworthiness Directives; Airbus Helicopters

**Action Urgency Score:** 55/100

| Field | Value |
|---|---|
| Agency | Transportation Department; Federal Aviation Administration |
| Type | Proposed rule |
| Action | Notice of proposed rulemaking (NPRM). |
| Published | 2026-09-28 |
| Comments close | 2026-11-12 |
| Significant | No |
| CFR parts | 14 CFR 39 |
| Summary | The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model AS 365 N2, AS 365 N3, EC 155 B, EC 155 B1, SA 365 N, and SA 365 N1 helicopters. This proposed AD was prompted by gaps between the seals and engine cowling, which were found during an investigation related to an engine compartment fire. Gaps between the seals and engine cowling could cause inadequate sealing of the engine compartment firewalls leading to fire propagation between engine compartments and reduced effectiveness of the extinguishing agent. This proposed AD would require modifying the engine |
| Document number | 2026-19729 |

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

Source: Federal Register API (Office of the Federal Register) (https://www.federalregister.gov/documents/2026/09/28/2026-19729/airworthiness-directives-airbus-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.