TM 1-1510-225-10 1-1 CHAPTER 1 INTRODUCTION 1-1.  GENERAL. These  instructions  are  for  use  by  the  operators.   They  apply  to  the  C-12R,  C-12T3,  and  C-12F3 model aircraft. 1-2.  WARNINGS, CAUTIONS, AND NOTES. Warnings,    cautions,    and    notes    are    used    to emphasize important and critical instructions.   Explanatory examples are as follows: An    operating    procedure,    practice,    etc., which,    if    not    correctly    followed,    could result in personal injury or loss of life. CAUTION An operating procedure, practice, condition,     or     statement     which,     if     not strictly observed, could result in damage to or     destruction     of     equipment,     loss     of mission  effectiveness,  or  long  term  health hazards to personnel. NOTE An   operating   procedure,   condition,   etc., which is essential to highlight. 1-3.  DESCRIPTION. This manual contains the best operating instructions   and   procedures   for   the   C-12R,   C-12T3, and  C-12F3  aircraft  under  most  circumstances.    The observance of limitations, performance, and weight/balance    data    provided    is    mandatory.        The observance  of  procedures  is  mandatory  except when modification is required because of multiple emergencies,   adverse   weather,   terrain,   etc.      Basic flight   principles   are   not   included.      THIS   MANUAL SHALL  BE  CARRIED  IN  THE  AIRCRAFT  DURING ALL FLIGHTS.  Manuals printed from  CD must be on standard 8 1/2 x 11 paper. Users are authorized to remove the chapters that are  not  applicable  to  their  aircraft  model  and  are  not required to carry those chapters on-board. 1-4.  APPENDIX A, REFERENCES. Appendix  A  is  a  listing  of  official  publications, cited  within  this  manual,  which  are  applicable  to  and available for flight crews. 1-5.  APPENDIX B, ABBREVIATIONS AND TERMS. Appendix   B   is   a   listing   of   abbreviations   and terms used throughout this manual. 1-6.  INDEX. The    index    lists,    in    alphabetical    order,    titled paragraphs,    figures,    and    tables    contained    in    this manual. 1-7.  ARMY AVIATION SAFETY PROGRAM. Reports   necessary   to   comply   with   the   safety program are prescribed in AR 385-40. 1-8.  DESTRUCTION     OF     ARMY     MATERIEL     TO PREVENT ENEMY USE. For  information  concerning  destruction  of  Army materiel to prevent enemy use, refer to TM 750-244-1-5. 1-9.  FORMS AND RECORDS. Army aviators flight records and aircraft maintenance  records  which  are  to  be  used  by  crew members   are   prescribed   in   DA   PAM   738-751  and weight and balance manual TM 55-1500-342-23. 1-10.  EXPLANATION OF CHANGE SYMBOLS. a.   General.       Change    symbols    show    current changes   only.      Change   symbols   are   not   used   to indicate     changes     in     the     following:          introductory material;  indexes  and  tabular  data  where  the  change cannot  be  identified;  blank  space  resulting  from  the deletion of text, an illustration or a table; or correction of  minor  inaccuracies,  such  as  spelling,  punctuation, relocation  of  material,  etc.,  unless  correction  changes the meaning of instructive information and procedures. b.  Text  and  Table  Changes.    Changes  to text and  tables,  including  new  material  on  added  pages, are  indicated  by  a  vertical  line  in  the  outer  margin extending   close   to   the   entire   area   of   the   material affected. WARNING