TM 55-1500-342-23 Section II.  INSTRUCTIONS FOR USE OF DD FORM 365 SERIES AND CHART E 4-4.1  All  illustrations  for  the  DD  Form  365  series  are samples,  follow  written  instructions  that  apply  to  each form    to    initiate    and    maintain    weight    and    balance records. 4-5.    DD  Form  365  (Record  of  Weight  and  Balance Personnel).      DD   Form   365   (figure   4-1)   provides   a record    of    weight    and    balance    technician    who    is responsible   for   maintenance   of   weight   and   balance records for a specific aircraft.  The form has spaces for model/design, serial number, name, grade, station, date assigned   and   date   relieved   from   duty   of   weight   and balance personnel.  The "where and when" block is not required to be completed on this form. 4-6.    DD  Form  365-1  (Chart  A-Basic  Weight  Check List Record). NOTE All references to check marks for the Chart A will denote the use of the following symbols. (X) Item is in the aircraft. (0) Item is out of the aircraft. a.    The Basic Weight Check List Record is a list of all  equipment  that  is  or  may  be  installed  and  for  which provisions or fixed stowage has been made in a definite location in the aircraft.  All items weighing two pounds or more shall be listed for aircraft whose initial basic weight is under 25,000 pounds.  AH items weighing five pounds or   more   shall   be   listed   for   all   other   aircraft   (further guidance  may  be  found  in  MILW-25140,  Weight  and Balance    Control    System).        The    weight,    arm,    and moment  or  simplified  moment  of  the  individual  items must  be  listed  for  use  in  correcting  the  aircraft  basic weight and moment on the CHART C (DD Form 365-3) as changes are made in these items.  All entries shall be typed  or  clearly  written  in  ink.    When  check  marks  (X) and zeros (0) are entered in the IN AIRCRAFT column, the CHART A serves as a record of equipment included in  the  basic  weight  of  the  aircraft  at  the  last  inventory. When  a  check  mark  is  entered  in  CHART  C  ENTRY column,  the  check  mark  is  an  indication  that  an  entry has been made in the CHART C as a result of a change in  the  status  (in  or  out  of  the  aircraft)  of  an  item  since the previous inventory. b.    The  CHART  A  shall  be  checked  by  an  aircraft inventory  and  updated  whenever:    (1)  The  aircraft  is received at a new unit, and weight and balance authority changes. (2) The aircraft is weighed. (3) At time intervals required by regulation. c.    The    initial    CHART    A    for    each    aircraft    is established by the manufacturer as follows: (1) At  the  time  of  delivery,  the  manufacturer inserts    the    designation    of    the    AIRCRAFT    MODEL (MODEL/DESIGN) and SERIAL NUMBER in the spaces provided at the top of the CHART A. (2) Each CHART A item shall be assigned an alphanumeric    number.        These    numbers    shall    run consecutively  and  indicate  the  alphabetical  designation of the compartment; for example, items A-1.  then A-2, then  A-3  and  so  on  listed  for  compartment  A.    These item    numbers    shall    be    listed    in    the    column    titled COMPARTMENT AND ITEM NUMBER. (3) The alphabetical and descriptive designations  for  each  aircraft  compartment  (in  capital letters, such as A-NOSE) shall be shown in the ITEMS AND LOCATION column at the top of each compartment's     equipment     list.          The     compartment designation shall be underlined and separated from the equipment list by one blank line.  The dimensional limits of each compartment shall be stated in terms of inches from   the   reference   datum,   such   as   A-NOSE   (5-64 inches) and B-PILOTS (64-104 inches), and shall agree with  those  compartment  limits  shown  in  the  CHART  E LOADING     DATA.          Compartment     equipment     lists documented  in  the  ITEMS    AND  LOCATION  column shall  present  individual  operating  equipment  items  by description and part number (such as, PreamplifierAPR- 25/AM2348).          The     description     and     part     number presented   in   this   column   shall   be   common   with   that shown    on    the    equipment    item    identification    plate. Equipment  within  each  compartment  should  be  listed such that the arms (in the column titled "ARM") progress numerically   from   the   forward   to   the   aft   limit   of   the compartment.  If a compartment is divided into an upper and lower section, all items within one section should be listed before continuing to the next section. NOTE Serial numbers for CHART A items, (Engines, Blades, Etc.) are only required for the    items    which    reflect    serial    numbers already    identified    on    CHART    A,    by    the manufacturer  of  the  aircraft  when  delivered. All subsequent replacements of these items will  require  entry  of  the  new  serial  number, weight and moment of CHART A. (4) The   weight,   arm,   and   moment   of   each item   shall   be   listed   in   the   appropriate   columns.      A constant  may  be  used  to  simplify  the  moment.    If  a constant   is   used,   it   will   be   listed   at   the   top   of   the MOMENT column. Change 6      4-3