Service Bulletins and Letters

Explanatory notes to the list of service letters and bulletins in English

“M” identification (Maintenance) 

The service letters and bulletins freely accessible at www.lompraha.cz are marked in the column binding or information by the letter “M” and are free of charge.

“O” identification (Overhaul)

The service letters and bulletins concerning the general overhauls are marked in the column binding or information by the letters “O”. They are not freely accessible at www.lompraha.cz. Their sending is performed individually on the basis of a contract and is for a charge.

Important: Bulletin numbers for engine types other than the M337AK are listed in the bulletin lists for the M337AK. Next, the equivalent bulletin numbers are listed in the CONVERTOR table, and finally, the bulletin numbers for each engine type are always listed on the bulletin itself (when opened) for your review.