# Airworthiness Directives; BRP-Powertrain GmbH & Co KG Rotax Reciprocating Engines
> **Rule** · Final rule; request for comments. · Published 2013-04-15 · Effective 2013-04-30 · 78 FR 22166
## Document
- **Document number:** 2013-08460
- **Category:** airworthiness
- **Manufacturer:** BRP-Powertrain GmbH & Co KG Rotax Reciprocating
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 78 FR 22166
- **Publication date:** 2013-04-15
- **Effective date:** 2013-04-30
- **FAA docket:** Docket No. FAA-2013-0263
## Abstract

We are adopting a new airworthiness directive (AD) for certain BRP-Powertrain GmbH & Co KG Rotax 912 F2; 912 F3; 912 F4; 912 S2; 912 S3; 912 S4; 914 F2; 914 F3; and 914 F4 reciprocating engines. This AD requires a one-time visual inspection for excessive oil deposits or carbon deposits on the No. 2 and No. 3 spark plug center and grounding electrodes, and if found, replacement of the cylinder head before further flight. This AD was prompted by a report of certain No. 2 and No. 3 cylinder heads not manufactured to proper specification. We are issuing this AD to prevent excessive oil consumption, which could result in an in-flight engine shutdown, forced landing, and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/04/15/2013-08460/airworthiness-directives-brp-powertrain-gmbh-and-co-kg-rotax-reciprocating-engines)
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