Rotax 912 ULS Alert Service Bulletins

Alert Service Bulletins
Alert Service Bulletins contain service requirements and instructions that are very important to flight safety and must be addressed, complied with, or accomplished before continued flight operations.

These ASBs are specific to Rotax 912 ULS Serial No. 678**** and are all mandatory

ASB-912-051UL Checking Of Magnetic Plug On Rotax Engine Type 912/914
1 October 2006 690kb
In a limited number of cases increased wear of the camshaft/hydraulic valve tappet can occur. Additional checks of the engine magnetic plug are required for affected engines.

ASB-912-060UL Checking of the oil pump fixation bolts on Rotax engine type 912 and 914
1 January 2012 180kb
During quality checks, it was discovered in a limited number of engines during production the oil pump fixation bolts may not have been torqued to the proper specification.

ASB-912-061 Replacement of the pressure side fuel hose at fuel pump part no 839114 REV.1
1 May 2012 180kb
Due to variations in the manufacturing of the fuel hose, rubber particles may become detatched. These particles can interfere or supress the fuel mixture in the carburetor. This may lead to rough operation, or shutdown. Rev. 1

ASB-912-061UL Replacement of the pressure side fuel hose at fuel pump part no 839114 REV.1
1 May 2012 180kb
Due to variations in the manufacturing of the fuel hose, rubber particles may become detached. These particles can interfere or suppress the fuel mixture in the carburetor. This may lead to rough operation, or shutdown. Rev. 1