# Airworthiness Directives; Bell Textron Canada Limited Helicopters

**Action Urgency Score:** 20/100

| Field | Value |
|---|---|
| Agency | Transportation Department; Federal Aviation Administration |
| Type | Proposed rule |
| Action | Notice of proposed rulemaking (NPRM). |
| Published | 2026-09-10 |
| Comments close | 2026-10-26 |
| Significant | No |
| CFR parts | 14 CFR 39 |
| Summary | The FAA proposes to adopt a new airworthiness directive (AD) for all Bell Textron Canada Limited (Bell) Model 206L, 206L-1, 206L-3, and 206L-4 helicopters with FAA Supplemental Type Certificate (STC) SR02684LA installed. This proposed AD was prompted by an event where a Bell Model 206L helicopter with FAA STC SR02684LA installed experienced moderate to severe vertical vibration, which resulted in damage to the tail boom of the helicopter. This proposed AD would require revising the Limitations section of the existing rotorcraft flight manual (RFM) for the helicopter to include a never-exceed-s |
| Document number | 2026-18522 |

## Why this score


Source: Federal Register API (Office of the Federal Register) (https://www.federalregister.gov/documents/2026/09/10/2026-18522/airworthiness-directives-bell-textron-canada-limited-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.