Information for the safe operation of the AVO 68 “Samburo” aircraft.
Ladies and gentlemen,
We would like to draw your attention to the Rotax Service Bulletins SB-912-066 and SB-914-047.
Temperature is now measured differently for Rotax engine types 912 and 914 (series) (changed from cylinder head temperature measurement to coolant temperature measurement). The change means that, at the appropriate measurement point in the cylinder head, the temperature of the aluminium in the cylinder head is no longer measured. Instead, the temperature of the coolant is measured.
The cooling performance remains unchanged by the switch to new model cylinder heads. According to the Rotax Service Bulletin, an inspection of the cockpit’s gauges will be carried out within the next 25 operating hours, but in any case before 31st March 2015.
M+D Flugzeugbau GmbH &Co. KG will continue to keep you updated on additional measures through our M+D Service Bulletins.
We request that you provide us with the engine model and serial number of your Samburo.
Thank you in advance for your understanding.
We will be happy to provide you with any additional information you may require.
Office of Airworthiness