Airworthiness Directive · Amendment 39-19778 · Reciprocating engine cylinder section
BRP-Rotax GmbH & Co KG Engines
This AD applies to BRP-Rotax GmbH & Co KG (Type certificate previously held by BRP-Powertrain GmbH & Co KG, Bombardier-Rotax GmbH) (Rotax) Model 914 F2, 914 F3, and 914 F4 engines, with an exhaust valve part number (P/N) 854113 that has a production lot number 0317 or 0517.
The FAA is adopting a new airworthiness directive (AD) for certain BRP-Rotax GmbH & Co KG (Rotax) 914 F2, 914 F3, and 914 F4 model engines. This AD requires removal of a certain exhaust valve and its replacement with a part eligible for installation. This AD was prompted by a report of a broken exhaust valve installed on a Rotax 914 model engine. The FAA is issuing this AD to address the unsafe condition on these products.
Within 10 flight hours or 3 months after the effective date of this AD, whichever occurs first, remove from service each exhaust valve P/N 854113 that has a production lot number 0317 or 0517, and replace with a part eligible for installation.
Note 1 to paragraph (g): For guidance on replacing the exhaust valve, refer to the Accomplishment Instructions, paragraphs 3.1 through 3.6, of Rotax Alert Service Bulletin ASB-915 i A-003R2/ASB-915 i B-003R2/ASB-914-054R2 (single document), dated December 21, 2018.
After the effective date of this AD, do not install an exhaust valve P/N 854113 that has a production lot number 0317 or 0517 on any engine.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Engines
