M137, M332, M337 Engines Overhaul.The alternative procedurefor M137, M332 and M337 piston enginesovehauls is defined with the WMS-OS –F1-13 procedure (Definitiondocument).

Installation of an AKV, Inc. Dual Engine Cycle Counter

Prolongation of TBO for the M137, M332 and M337 engines in serviceaccording to the procedure No. WMS - OS/09/04 (Definition document)under the AP DOA Parma Technik organization No. M332, 137, 337/001