TM 1-1510-218-10 8A-2 8A-10.  USE OF CHECKLIST. Although    a    good    working    knowledge    of    all aircraft  procedures  is  desirable,  it  is  not  mandatory that   they   be   committed   to   memory.      The   pilot   is responsible for the initiation and accomplishment of all required  checks.    Checklist  items  will  be  called  out orally and the action verified using the checklist (-CL). Normally,   the   pilot   not   flying   (PNF)   will   read   the checklist  and  perform  such  duties  as  directed  by  the pilot  flying  (PF).    “As  required”  will  not  be  used  as  a response;  instead the actual position or  setting  of  the unit or item, such as "On" or "Up" or "Approach" will be stated.        Upon    completion    of    each    checklist,    the crewmember    reading    the    checklist    will    announce “Checklist complete.” 8A-11.  CHECKS. a.    Listed  below  are  the  symbols  used  in  the following procedures and their associated meanings. N Indicates performance of step is mandatory for night flights. I Indicates a mandatory check for instrument flights. O Indicates if installed. H Indicates  an  operational  check  contained in the performance section of the condensed checklist. * Indicates performance of step is mandatory   for   all   through   flights.      The asterisk  applies  only  to  checks  performed prior to takeoff. b.    Placarded  items  such  as  switch  and  control positions appear in boldface capital letters. 8A-12.  BEFORE EXTERIOR CHECK * 1.   Forms/publications    –    Check    DA    Forms 2408   -12,   -13,   -14,   and   -18,   DD   Form 365-4, locally required forms and publications,   and   availability   of   operator's manual (-10) and checklist (-CL). * 2.   Oxygen     system     –     Check.          Refer     to Table 8A-1 Oxygen Duration and Figure 8A-1. CAUTION If high or gusty winds are present, and the flight controls are unlocked, control surfaces may be damaged by buffeting. * 3.   Flight Controls – Unlocked and checked. * 4.   Parking brake – As required. CAUTION The  elevator  trim  shall  not  be  forced  past the  limits  that  are  shown  on  the  elevator trim indicator scale. 5.   Manual trim – Check and set to zero. CAUTION Do  not  cycle  landing  gear  handle  on  the ground. * 6.   LDG GEAR CONTR – DN. * 7.   EFIS POWER – OFF. H 8.   Fuel pumps/crossfeed operation – Check. a.   FIRE PULL handles – Pull. b.   STANDBY PUMPS – ON. c.   BATT  switch  –  ON  (#1   and  #2  FUEL PRESS lights illuminated. d.   Fuel FIRE PULL HANDLES – IN. e.   #1 and #2 FUEL PRESS annunciators – Extinguished. f.    STANDBY PUMPS – Off. g.   #1 and #2 FUEL PRESS annunciators – illuminated. h.   CROSSFEED   flow   alternately   left   and right   (FUEL   CROSSFEED   annunciator illuminated,   #1   and   #2   FUEL   PRESS annunciators extinguished). i.    CROSSFEED flow – OFF. j.    AUX TRANSFER – AUTO. * 9.   Fuel gauges – Check quantity. H    * 10.  EFIS POWER and INVERTERS – ON, check, OFF. a.   EFIS POWER – Push ON. b.   Turn ON either INVERTER. c.   Ensure  both  pilots’  EADI  and  EHSI  are fully operational. d.   EFIS POWER and INVERTERS – Off. 11.  Subpanel – Check and set.