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-07.21.25

Airborne-Unlimited-07.22.25

AirborneUnlimited-07.23.25

Airborne-Unlimited-07.24.25

AirborneUnlimited-07.25.25

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

Airborne 07.21.25: Nighthawk!, Hartzell Expands, Deltahawk 350HP!

Also: New Lakeland Fly-in!, Gleim's DPE, MOSAIC! Nearly three-quarters of a century in the making, EAA is excited about the future… especially with the potential of a MOSAIC>[...]

ANN's Daily Aero-Term (07.27.25): Estimated (EST)

Estimated (EST) -When used in NOTAMs “EST” is a contraction that is used by the issuing authority only when the condition is expected to return to service prior to the >[...]

ANN's Daily Aero-Linx (07.27.25)

Aero Linx: Regional Airline Association (RAA) Regional airlines provide critical links connecting communities throughout North America to the national and international air transpo>[...]

NTSB Final Report: Luce Buttercup

The Airplane Broke Up In Flight And Descended To The Ground. The Debris Path Extended For About 1,435 Ft. Analysis: The pilot, who was the owner and builder of the experimental, am>[...]

Classic Aero-TV: 'That's All Brother'-Restoring a True Piece of Military History

From 2015 (YouTube version): History Comes Alive Thanks to A Magnificent CAF Effort The story of the Douglas C-47 named, “That’s all Brother,” is fascinating from>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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