The greatest power was to be attained at 3250 rpm, with MW-50 system engaged, and up untill 6800m (= Sonder Notleistung). After that MW-50 is not to be used, while rpm=3250 (=Start und Notleistung ). With rpm=3200 the 'Steig und Kampfleistung' is in effect. Three short lines between 11 and 15km...