Rotax amends Alert Service Bulletin requiring Magnetic Plug

[Aviation Engines]

The following Alert Service Bulletin has been amended by Rotax. The Alert status has been removed and the Engine serial number list for affected engines has been reduced to a more defined range. The new amended SB also requires a detailed magnetic plug inspection at each mandatory oil change in accordance to the current engine maintenance schedule for affected engines.


SB-912-051 / SB-914-034 – SB-912-051UL / SB914-034UL

Checking of Magnetic Plug on Rotax Engine Type 912/914 (series).


The following engine models may be affected: 912F, 912A, 912UL, 912S, 912ULS, 912ULSFR & 914F, 914UL

NOTE: Affected engines having already met compliance with the original Alert Service Bulletin previously issued must now also comply with the new requirement for a detailed magnetic plug inspection at each mandatory oil change in accordance with the current engine maintenance schedule/checklist (found in the Line Maintenance Manual – see www.Rotax-Owner.com for downloadable copy).


SUMMARY OF BULLETIN;

In some limited cases, the affected engines could suffer from increased wear of the camshaft and/or hydraulic valve tappets. Such a condition would lead to excessive wear material being captured by the engine magnetic plug, therefore affected engines must have a detailed magnetic plug inspection as per the instructions supplied in the SB.


CHECKING IF YOUR ENGINE IS AFFECTED;

First, make sure your engine type is affected, then check your Engine serial number and compare to those listed in the applicable SB. For engines which have had the cam shaft and/or lifters previously replaced for maintenance or overhaul between January 1 2006 and December 1 2007, they must also have the magnetic plug checked in compliance to the SB and every mandatory oil change thereafter regardless of engine serial number. For more information on removing and replacing your magnetic plug and performing a proper detailed inspection, click on the following link;

http://www.rotax-owner.com/expanded.htm



COMPLIANCE;

Before the first initial start up of any new engine with affected serial number.

Within the next 5 hrs. (one time) for any engine overhauled or repaired where the cam shaft and/or lifters have been changed within the affected dates January 1, 2006 to December 1, 2007.

For affected engines within the next 5 hours of operation (one-time), but at the latest April 1, 2008 if compliance to the original Alert Service Bulletin has not yet been carried out.

For affected engines during each mandatory oil change thereafter in accordance with the current engine maintenance schedule/checklist (found in the Line Maintenance Manual – see www.Rotax-Owner.com for copy).



ADDITIONAL EXPANDED VIDEO INSTRUCTIONS;

A special on-line video has been developed to supplement this mandatory SB and add further detailed instructions for proper removal, replacement and inspection of the magnetic plug including special tool requirement and procedures list. Click on the following link for access to this additional information;

http://www.rotax-owner.com/expanded.htm



These Mandatory SB documents may be downloaded from www.rotax-owner.com or by clicking on the following links;

SB-912-051 / SB-914-034
http://www.rotax-owner.com/si_tb_info/g ... &S_TYPE=NW


SB-912-051UL / SB-914-034UL
http://www.rotax-owner.com/si_tb_info/g ... &S_TYPE=NW



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