TM 1-1510-225-10 8-2 8-10.  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." 8-11.  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. 8-12.  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.  Toilet – Check. 3.  Emergency   equipment   –   Check   that   all required  emergency  equipment  is  available and that fire extinguishers  and  first  aid  kits have current inspection date. a.    Survival kits (3). b.   First aid kits (3). c.   Baggage compartment fire extinguisher. d.   Overhead   emergency   lighting   (forward and aft). e.   Emergency exit. f.    Cockpit fire extinguisher. * 4.  LDG GEAR CONTROL – DN. * 5.  Manual gear extension handle – Down and latched. * 6.  Parking brake – Set. 7.  Flight controls – Check. 8.  Manual trim – Check and set to zero. * 9.  IGNITION AND ENGINE START switches – OFF. * 10.  Circuit breakers – Check in. H 11.  Fuel system – Check. a.   Fuel  FIREWALL  SHUTOFF  VALVES  – CLOSED. b.   STANDBY PUMPS – ON. c.   BATT   switch   –   ON   (L   and   R   FUEL PRESS,    L    and    R    ENG    ANT-ICE annunciators illuminated). d.   L  and  R  FUEL  PRESS  annunciators  – Illuminated. e.   Fuel  FIREWALL  SHUTOFF  VALVES  – OPEN. f.    L  and  R  FUEL  PRESS  annunciators  – Extinguished. g.   STANDBY PUMPS – OFF. h.   L  and  R  FUEL  PRESS  annunciators  – Illuminated. i.    CROSSFEED   FLOW   alternately   LEFT and RIGHT (FUEL CROSSFEED annunciator illuminated, L AND R FUEL PRESS annunciators extinguished). j.    CROSSFEED FLOW – OFF. k.   Auxiliary fuel transfer – AUTO. l.    NO TRANSFER lights – TEST. m. Fuel quantity – Check. 12.  Exterior lights and heat – Check. a.   Navigation, recognition, beacons, strobes,    door    entry    light,    logo    light, landing, and taxi lights – Check on, then OFF.