Rotax has released a revision to ASB-912-061 and ASB-912-061UL regarding the replacement of the pressure side fuel hose at fuel pump part no. 893114 for ROTAX engine type 912 (Series).
NOTE: This ASB only affects some hoses supplied by Rotax, it is serial number specific.
Alert Service Bulletin released from Rotax on limited number of fuel lines supplied with fuel pumps.
Rotax has released an Alert on a select group of fuel lines found with the 893114 fuel pumps. This was due to reports of some rubber debris coming from the inside covering of the fuel lines that could possibly contaminate the carburetion jetting. Since it is a safety of flight issues any aircraft with the affected pump that is within that range must be grounded until a suitable line is fitted to the pump. Currently the distributors are waiting for the notice of when appropriate spare parts will be shipped to supply for the affected engines.
Warranty for any affected line will be covered as long as the engine is registered. For engines not yet installed there will be a special format that can be done to get an exchange hose. Customers and maintenance providers will be required to return the old line to obtain credit for the replacement hose.
Each distributor will provide details of the programs via their respective service networks. As this ASB develops www.Rotaxnews.net will keep you informed of the progress of parts supply.
Q. How many engines does this ASB affect?
A. Well if you purchased your engine in the US, South or Central America’s there will be very few owners affected. According to the distributor, there are only 2 engines in their area that have been affected. One of those was still in storage. If you bought an aircraft from outside this region, please check the ASB. The range of the affected engines is:
For the 912 U – L from S/N 6,770.461 up to S/N 6,770.462 inclusive
For the 912 ULS from S/N 6,778.908 up to S/N 6,778.932 inclusive/6,778.934 up to 6,778.958 inclusive/6,779.478 up to 6,779.502/6,779.504 up to 6,779.511
For the 914 UL from S/N 6,774.704 up to S/N 6,774.733 inclusive/6,774.861 up to 6,774.869 inclusive.
Q. What does an owner do if he has an engine in this range?
A. This question is easier to answer in point form:
1. They must first make sure his engine is registered. Any independent Service Centre (iSC) can help him/her with this.
2. To do this check in the United States, on an Special Light Sport Aircraft (SLSA), an independent Rotax Maintenance Technician (iRMT) with an Light Sport Repairman (LSRM) or Airframe and Powerplant (A&P) certificate is required.
Today Rotax released a new set of new Service Bulletins for the type 9 series engines. The issue found was a hardness problem with the crankshaft protection washer under the bolt and locking washer holding the flywheel in place. Given that Rotax wishes to ensure no problems will be seen in the flied they have decided to replace all washers that were in that lot of materials. This then is only applicable to a serial range of engines and will not affect older engines or any newer ones after that serial range.
4 bulletins were released, 2 for the certified engines, the type 912S series and the 914F series. 2 additional bulletins were released for the 912UL series and the 914UL series. Technicians doing the replacements will want to make sure they refer to the correct bulletin, to attain the serial range that is to receive the SB modification. New parts are already being distributed and many of the engines affected were still in the inventories of the Rotax Aircraft Engines distributors.
Owners and Rotax iRMT ( independent Rotax Maintenance Technicians), are reminded to check the engine log books and verify if the engine has already complied to the bulletin, as a large number were done at the distributor level prior to supply to the OEM and customers. If the part change must be done on an engine in the field the log book must have an entry to indicate that the serial involved has been done in compliance with the bulletin.
The Rotax network of distributors and independent Service Centres will have details of any warranty coverage, should replacement of the washer be needed. Contact your service provider if you have questions or do not understand the bulletin.