Rotax Issues Service Bulletins For Certain 912, 914 Engines | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Most Recent Daily Episodes

Episode Date

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday Airborne-Thursday

Airborne-Friday

Airborne On YouTube

Airborne-Unlimited-12.08.25

AirborneNextGen-
12.09.25

Airborne-Unlimited-12.10.25

Airborne-AffordableFlyers-12.11.25

AirborneUnlimited-12.12.25

AFE 2025 LIVE MOSAIC Town Hall (Archived): www.airborne-live.net

Wed, Nov 16, 2011

Rotax Issues Service Bulletins For Certain 912, 914 Engines

Inspections Must Be Conducted Before Further Flight

Rotax has issued service bulletins for many of its 912 and 914 model engines.

The bulletins apply to both 921A, F, S UL, ULS, and ULSFR model engines, as well as a group of its 914F and UL engines. The bulletins outline steps to be taken as the result of a "deviation" in the manufacturing process of some crankshafts causing a crack formation to occur on the power take off side. Rotax says the cracks can case a breakage of the crankshaft support bearing and may lead to engine stoppage.

According to the bulletins, the engines must be checked for cracks in the crankshafts before any further flight, and not later than January 1st, 2012.

If a ferry flight is required, a magnetic plug check must be conducted prior to the flight. If no deviations, such as chips or excess metal filings are found, the engine may be operated for a maximum of four hours.

Specific serial number series can be found at the FMI links below.

FMI: US, USL, ULSFR Bulletin A,F,S Bulletin

Advertisement

More News

ANN's Daily Aero-Term (12.13.25): Light Gun

Light Gun A handheld directional light signaling device which emits a brilliant narrow beam of white, green, or red light as selected by the tower controller. The color and type of>[...]

Aero-News: Quote of the Day (12.13.25)

“We have performed extensive ground testing by comparing warm up times, full power tethered pulls, and overall temperatures in 100 degree environments against other aircraft >[...]

NTSB Final Report: Gippsland GA-8

While Taxiing To Parking The Right Landing Gear Leg Collapsed, Resulting In Substantial Damage Analysis: The pilot made a normal approach with full flaps and landed on the runway. >[...]

Classic Aero-TV: Historically Unique -- Marlin Horst's Exquisite Fairchild 71

From 2014 (YouTube Edition): Exotic Rebuild Reveals Aerial Work Of Art During EAA AirVenture 2014, ANN's Michael Maya Charles took the time to get a history lesson about a great ai>[...]

Airborne 12.12.25: Global 8000, Korea Pilot Honors, AV-30 Update

Also: Project Talon, McFarlane Acquisition, Sky-Tec Service, JPL Earth Helo Tests Bombardier has earned a round of applause from the business aviation community, celebrating the fo>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2025 Web Development & Design by Pauli Systems, LC