TM 55-1510-219-10 CAUTION Proper  procedures  for  handling  JP-4  and JP-5 fuel cannot be over stressed.  Clean, fresh  fuel  shall  be  used  and  the  entrance of  water  into  the  fuel  storage  or  aircraft fuel system must be kept to a minimum. CAUTION When  conditions  permit,  the  aircraft  shall be  positioned  so  that  the  wind  will  carry the   fuel   vapors   away   from   all   possible sources of ignition.  The fuel vehicle shall be    positioned    to    maintain    a    minimum distance  of  10  feet  from  any  part  of  the aircraft,    while    maintaining    a    minimum distance   of   20   feet   between   the   fueling vehicle and the fuel filler point. a. Shut  off  unnecessary  electrical  equipment  on  the aircraft, including radar and radar equipment.  The master switch may be left on, to monitor fuel quantity gages, but shall  not  be  moved  during  the  fueling  operation.    Do  not allow  operation  of  any  electrical  tools,  such  as  drills  or buffers, in or near the aircraft during fueling. b. Keep  fuel  servicing  nozzles  free  of  snow,  water, and mud at all times. c. Carefully remove snow, frost, water, and ice from the  aircraft  fuel  filler  cap  area  before  removing  the  fuel filler cap (fig.  2-29).  Remove only one aircraft tank filler cap  at  any  one  time,  and  replace  each  one  immediately after the servicing operation is completed. d. Drain   water   from   fuel   tanks,   filter   cases,   and pumps   prior   to   first   flight   of   the   day.      Preheat,   when required, to insure free fuel drainage. e. Avoid   dragging   the   fueling   hose   where   it   can damage the soft, flexible surface of the deicer boots. f: Observe NO SMOKING precautions. g. Prior  to  transferring  the  fuel,  insure  that  the  hose is grounded to the aircraft. h. Wash off spilled fuel immediately. i.    Handle  the  fuel  hose  and  nozzle  cautiously  to  avoid damaging the wing skin. j. Do not conduct fueling operations within 100 feet of energized airborne radar equipment or within 300 feet of energized ground radar equipment installations. k. Wear  only  nonsparking  shoes  near  aircraft  or fueling  equipment,  as  shoes  with  nailed  soles  or  metal heel plates can be a source of sparks. 2-88.  FILLING FUEL TANKS. WARNING Prior to removing the fuel tank filler cap, the hose nozzle static ground wire shall be  attached  to  the  grounding  lugs  that are located adjacent to the filler opening. Fill tanks as follows: a. Attach bonding cables to aircraft. b. Attach    bonding    cable    from    hose    nozzle    to ground socket adjacent to fuel tank being filled. CAUTION Do not insert fuel nozzle completely into fuel   cell   due   to   possible   damage   to bottom of fuel cell. c. Fill  main  tank  before  filling  respective  auxiliary tanks unless less than a full fuel load is desired. d. Secure   applicable   fuel   tank   filler   cap.      Make sure latch tab on cap is pointed aft. e. Disconnect bonding cables from aircraft. 2-89.  DRAINING MOISTURE FROM FUEL SYSTEM. To  remove  moisture  and  sediment  from  the  fuel system,  12  fuel  drains  are  installed  (plus  one  for  the ferry system, when installed). 2-90.  FUEL TYPES. Approved fuel types are as follows: a. Army Standard Fuels.  Army standard fuel is JP- 4. b. Alternate  Fuels.    Army  alternate  fuels  are  JP-5 and JP-8. 2-77