TM 1-1510-223-10 Table 2-9.  Approved Military Fuels, Oil, Fluids, and Unit Capacities SYSTEM SPECIFICATION CAPACITY Fuel MIL-T-5624 (JP-4 and JP-5) 540 U.S.  Gals.  Usable Engine Oil MIL-L-23699 10 U.S.  Quarts per engine Hydraulic Brake System MIL-H-5606 1 U.S.  Pint Oxygen System MIL-0-27210 140 Cubic Feet Toilet Chemical Monogram DG-19 3 Ounces BTO3858 Proper  procedures  for  handling  aircraft  fuels 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. 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 fueling 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  in  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,  water,  and  ice  from  the aircraft  fuel  filler  cap  area  before  removing  the  filler  cap (fig.    2-39).    Remove  only  one  aircraft  tank  filler  cap  at any one time, and replace each one immediately after the servicing operation is completed. d. Wipe    all    frost    from    fuel    filler    necks    before servicing the aircraft e. Drain   water   from   fuel   tanks,   filter   cases,   and pumps  prior  to  first  flight  of  the  day.    Preheat,  when required, to ensure free fuel drainage. f. Avoid   dragging   the   fueling   hose   where   it   can damage the soft, flexible surface of the deice boots. g. Observe NO SMOKING precautions. h. Prior  to  transferring  fuel,  ensure  that  the  hose  is grounded to the aircraft. i. Wash off spilled fuel immediately. j. Handle  the  fuel  hose  and  nozzle  cautiously  to avoid damaging the wing skin. k. Do not conduct fueling operations within 100 feet of energized airborne radar equipment or within 300 feet of energized ground radar equipment installations. I. Wear   only   nonsparlking   shoes   near   aircraft   or fueling  equipment,  as  shoes  with  nailed  soles  or  metal heel plates can be a source of sparks. Prior  to  removing  the  fuel  tank  filler  cap,  the hose    nozzle    static    ground    wire    shall    be attached   to   the   grounding   sockets   located adjacent to the filler opening. 2-91.  FILLING FUEL TANKS. Fill tanks as follows: 1. Attach bonding cables to aircraft 2. Attach bonding cable from hose nozzle to ground socket adjacent to fuel tank being filled. Do  not  insert  fuel  nozzle  completely  into  fuel cell  due  to  possible  damage  to  bottom  of  fuel cell.  Nozzle should be supported and inserted straight    down    to    prevent    damage    to    the antisiphon valve. 3. Remove fuel tank filler cap and fill main tank  before  filling  corresponding auxiliary tanks. 2-85