# Airworthiness Directives; AgustaWestland S.p.A. (Agusta) Helicopters
> **Rule** · Final rule; request for comments. · Published 2013-10-01 · Effective 2013-10-16 · 78 FR 60186
## Document
- **Document number:** 2013-23578
- **Category:** airworthiness
- **Manufacturer:** AgustaWestland S.p.A. (Agusta)
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 78 FR 60186
- **Publication date:** 2013-10-01
- **Effective date:** 2013-10-16
- **FAA docket:** Docket No. FAA-2013-0640
## Abstract

We are adopting a new airworthiness directive (AD) for Agusta Model AB139 and AW139 helicopters. This AD requires deactivating the Full Icing Protection System (FIPS) and installing a placard next to the FIPS controller stating that flight into known icing is prohibited. This AD is prompted by a report of a fire in the aft avionics bay and the baggage compartment resulting from an Auto Transformer Rectifier Unit internal circuit overload. These actions are intended to prevent a fire, structural damage, and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/10/01/2013-23578/airworthiness-directives-agustawestland-spa-agusta-helicopters)
---
*AI Analytics · CC0 1.0*