TM 1-1510-225-10 3B-99 Table 3B-45.  Alternate Flight Plan Leg A Page (Continued) NO. DESCRIPTION/FUNCTION 5 Insert leg TAS (– resets to previous leg). 6 Top Of Climb (TOC) location within current leg. 7 Insert leg TO waypoint. 8 Outbound bearing of FROM / TO waypoint. 9 Insert leg FROM waypoint (leg 01 only). The  zero  fuel  weight  entry  is  used  to  calculate the gross weight of the aircraft on the ground with fuel loaded  and  the  gross  weight  remaining  after  each  leg is  flown  as  indicated  on  the  Alternate  Flight  Plan  B page.  Refer to Figure 3B-62 and Table 3B -46. Figure 3B-62.  Alternate Flight Plan Leg B Page Table 3B-46.  Alternate Fligh Plan Leg B Page NO. DESCRIPTION/FUNCTION 1 Insert   planned   time   of   arrival   (*   indicates quantity   has   been   inserted;   all   other   times calculated from entered time). 2 Leg Estimated Time En Route (ETE). 3 Return to Alternate Flight Plan page. 4 Insert leg fuel burn rate. 5 Insert   planned   time   of   departure   (first   leg only). (4)   Alternate Flight Plan Fuel Summary.  The Fuel page presents a summary of the fuel requirements  for  the  alternate  flight  plan.    Refer  back to   Figure   3B-60.      If   no   approach   (APPR)   fuel   is entered, no approach time is allocated.  If an approach fuel is entered, a standard 15-minute time allotment is added to the total flight time, regardless of the amount of fuel entered.  If an initial total fuel has been entered on the Fuel Init page, the EXTRA fuel is calculated by subtracting the required (REQ) from the TOTAL.  If an EXTRA  value  is  entered  (in hours or kilo-pounds), the required initial total fuel is calculated and shown as the TOTAL.  If an aerial refueling (ONLOAD) is entered at a waypoint in the alternate flight plan, an EXTRA entry is  not  permitted.    With  an  ONLOAD  fuel  defined,  the initial  total  fuel  is  not  automatically  computed  (fixed entry),  and  EXTRA  fuel  is  calculated  from  the  initial total  fuel,  ONLOAD  fuel,  fuel  required,  and  total  fuel entered.    The  display  of  total  and  extra  fuel  summary can  be  selected  between  total  fuel  quantity   (klb) and duration (hr). (5)   Entry and Display of Alternate Flight Plan Legs.  Unless entered by the crew, the default starting point for the first leg is the current aircraft position from the  Start  1  page  at  the  time  a  new  plan  is  created.   Waypoints may be  inserted  and  deleted  on  the  Leg  A pages or on the Alternate Flight Plan Waypoints page, in the same manner as for the active flight plan. The bearing displayed on the Leg A page is the outbound  bearing  from  the  starting  waypoint  for  that leg. The Top Of Climb (TOC) readout appears on the leg  with  the  distance  into  that  leg  that  the  TOC  is planned  to  occur,  given  the  average  climb  wind  and performance  data  entered  on  the  Climb  Initialization page. Selecting line select 3R toggles between distance  from  the  origin  of  the  Alternate  Flight  Plan (AFP)    to    the    current    waypoint/distance    from    the current  waypoint  to  the  end  of  the  AFP,  or  total  leg distance for the current displayed leg. If time and /or fuel calculations are desired, enter the   True   Airspeed   (TAS)   and   forecast  wind  at  the cruising altitude on this page.  A TAS or wind entry on this   page   will   transmit   from   the   current   displayed waypoint  to  all  succeeding  waypoints  when  entered.   Insertion of a new waypoint will use the previous leg’s wind  and  TAS  entries.  A blank wind will default to no wind   when   in   the   alternate   flight   plan.      Refer   to Paragraph  3B-19e(6)(b)  for  a  description  of  waypoint wind usage in flight planning. Patterns    (MFP’s)    may    also    be    inserted    or attached   to   waypoints   in   the   alternate   flight    plan.   When  inserted  or  attached,  a  P  is  indicated  on  the right side of line 3 and this also allows direct access to that pattern’s definition page for review or modification. (6)   Entry and Display of Alternate Flight Plan Leg  Time,  Fuel,  And  Weight.    Scrolling  laterally  from the Leg A page to the Leg B page, the pilot may enter parameters   to   compute   the   time,   fuel,   and   gross weights for each leg.