Operation Manual B/F L 1011F B/FM 1011F 0297 9683 en Please enter the engine serial number here. This number should be quoted when inquiring about Customer Service, Repairs or Spare Parts (see Section 2.1). All rights reserved. Technical modifications required to improve our engines are reserved with regard to speci- fication data and other technical information contained in this Operation Manual. No parts of this Manual may be reproduced in any form or by any means without our written approval. Engine Serial Number