# Airworthiness Directives; Fokker Services B.V. Airplanes
> **Rule** · Final rule. · Published 2013-09-13 · Effective 2013-10-18 · 78 FR 56601
## Document
- **Document number:** 2013-21672
- **Category:** airworthiness
- **Manufacturer:** Fokker Services B.V.
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 78 FR 56601
- **Publication date:** 2013-09-13
- **Effective date:** 2013-10-18
- **FAA docket:** Docket No. FAA-2012-0270
## Abstract

We are adopting a new airworthiness directive (AD) for all Fokker Services B.V. Model F.27 Mark 050 airplanes, and Model F.28 Mark 0070 and 0100 airplanes. This AD was prompted by reports of loose nuts on contactors in the electrical power center (EPC), and in some cases, burned contactors. This AD requires inspecting and, if necessary, adjusting, the torque values of nuts on circuit breakers, contactors, and terminal blocks of the EPC and battery relay panel. This AD also requires inspecting to determine if certain parts are installed, and installing the parts if necessary. We are issuing this AD to detect and correct loose nuts, which could result in arcing and potentially an onboard fire, possibly resulting in damage to the airplane and injury to occupants or maintenance personnel.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/09/13/2013-21672/airworthiness-directives-fokker-services-bv-airplanes)
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