This book, Training Circular TC 3-04.51 (TC 1-218) Aircrew Training Manual, Utility Airplane C-12 standardizes aircrew training programs (ATPs) and flight evaluation procedures. This aircrew training manual (ATM) provides specific guidelines for executing aircrew training. It is based on training principles outlined in Army Doctrine Reference Publication (ADRP) 7-0. This ATM establishes crewmember qualification, refresher, mission, and continuation training, and evaluation requirements. This publication applies to all C-12 Beechcraft Huron series crewmembers and their commanders in the Active Army, the Army National Guard (ARNG) / Army National Guard of the United States (ARNGUS), and the United States Army Reserve (USAR), Department of the Army civilians (DACs), and contractor's unless otherwise stated. This publication is the governing authority for training and flight evaluation purposes. Implementation of this publication conforms to AR 95-1 and TC 3-04.11. If a conflict exists between this publication and TC 3-04.11, the ATP commander determines the method of accomplishment based upon the requirement and the unit's mission as to which manual takes precedence. This manual, in conjunction with the ARs and TC 3-04.11, will help aviation commanders at all levels develop a comprehensive ATP. By using this ATM, commanders ensure that individual crewmember and aircrew proficiency is commensurate with their units' mission and that aircrews routinely employ standard techniques and procedures. Crewmembers will use this manual as a "how to" source for performing crewmember duties. It provides performance standards and evaluation guidelines so that crewmembers know the level of performance expected. Each task provides a description of how the task should be perform to meet the standard. ATP commanders of active Army, National Guard, and Army Reserve units operating the C-12 series aircrafts will use this ATM and TC 3-04.11 to develop individual commander's task lists (CTLs) for assigned aviators. ATP commanders will assign contractor/DAC pilots to assist in developing individual commander's task lists tailored to the current contract position using this ATM, TC 3-04.11, AR 95-20, current flight training guides (FTGs), and/or local command directives. Standardization officers, evaluators, and unit trainers (UTs) will use this manual and TC 3-04.11 as the primary tools to assist the commander in developing and implementing their ATP.