TM 1-1520-240-BD (3) Red Horizontal Dash (-). (a) This symbol indicates an inspection, special inspection, component replacement, maintenance  operational  check  or  test  flight  is  needed. The   symbol   is   also   used   to   indicate   that   a   normal modification work order (MWO) is overdue. (b) This   symbol   also   shows   that   the condition  of  the  equipment  is  unknown.    A  potentially dangerous   condition   may   exist   The   condition   will   be corrected as soon as possible. (4) Red Diagonal (/).  This symbol indicates a defect  exists  that  is  not  serious  enough  to  ground  the aircraft. b. Maintenance   of   Forms.      Instructions   for   the maintenance of forms, records, and reports are listed in DA PAM 738-751 and TB 1-1500-341-01.  When battle- damage repair (BDR) becomes necessary, the procedures in DA PAM 738-751 will apply. (1) In  the  Fault  Information  block  of  the  DA Form   2408-13-1   (See   Figure   1-2)   or   2408-13-3   (See Figure 1-4), list the fault. (2) Enter the status symbol in the status block and complete all required parts of the Fault Information block. (3) Update  the  status  in  the  System  Status block    of    DA    Form    2408-13    (See    Figure    1-1)    if necessary. (4) The  individual  completing  the  repair  will complete all required parts of the Correcting Information block  for  the  fault  on  the  DA  Form  2408-13-1  or  2408- 13-3. (5) Status   symbols   will   be   cleared   per   DA PAM 738-751. (6) After  completion  of  the  repair  update  the current  status  in  the  System  Status  block  of  the  DA Form 2408-13 if necessary. (7) When  DA  Form  2408-13-3  is  used,  this form will become part of the Flight Pack (8) DA  Form  2408-13-2  (See  Figure  1-3)  will be    used    to    document    related    maintenance    actions needed to repair the fault. c. Temporary  Repair.    If  the  repair  is  temporary, take the following action: (1) In the Correcting Information block for the fault  entered  on  the  DA  Form  2408-13-1  or  2408-13-3, enter   the   corrective   action   taken   and   complete   all required parts of the Correcting Information block (2) In  the  next  open  Fault  Information  block reenter the fault entry and state that a temporary repair was made for the fault.  If the temporary repair limits the capability  of  the  aircraft,  use  a  circled  red  "X"  status symbol.  Include the aircraft limitation in the fault entry. (3) If  the  status  of  the  temporary  repair  is  a red  diagonal  "/”,  the  entry  may  be  reentered  to  the  DA Form 2408-14-1 (See Figure 1-6). (4) If     the     temporary     repair     requires     an inspection at intervals, list the required inspection on DA Form 2408-18 (See Figure 1-5). (a) Enter   the   item   to   be   inspected   in block 5. (b) List the applicable TM in block 6. (c) State the frequency of the inspection in block 7. (d) Enter   when   the   next   inspection   is due in block 8. 1-5. QUALITY ASSURANCE AND QUALITY CONTROL.    A  trained  assessor  inspects  and  assesses battle damage and battle damage repairs.  Evaluation of damage and recommendations for repairs are based on thorough knowledge of the aircraft.  Technical guidance to repairers will be provided as necessary.  Ideally, the unit  aircraft  technical  inspectors  will  be  used  as  BDR assessors.  However, combat conditions may require the unit   aircraft   maintenance   officer   or   the   maintenance technician  to  assume  this  role.    The  pilot  in  command, with crew chief recommendations, may also be required to assess damage in critical situations.  Therefore, these personnel   must   have   a   thorough   knowledge   of   the aircraft an ACM/BDR. 1-6. BDR TOOLS AND MATERIALS.   Battle-damage repair  requires  simplicity  and  speed.    Authorized  tools and   materials   shall   be   used   where   possible.      With adequate   precautions,   AVUM   or   AVIM   manufactured items can be used to expedite repairs.  Cosmetic repair of    the    structure    may    be    accomplished    with    field expedients such as green tape and nonaircraft materials.    BDR  techniques  are  limited  only  by  safety considerations   and   the   experience   and   skill   of   the repairman. 1-2