TM 1-1510-224-10 8. Land as soon as practicable. e. Smoke   and   Fume   Elimination.        To    eliminate smoke and fumes from the aircraft, perform the following: 1. Crew oxygen - On and 100%. (2) ENVIRO    &    PNEU    BLEED    AIR    valve switches - PNEU ONLY. (3) FWD VENT BLOWER switch - AUTO. (4) AFT VENT BLOWER switch - Off. (5) CABIN AIR MODE SELECT switch - OFF. (6) If   smoke   and   fumes   are   not   eliminated: CABIN PRESS switch - DUMP. NOTE Opening storm window' (after depressurizing)   will   facilitate   smoke and fume removal. 7. Engine instruments - Monitor. 9-26.  FUEL SYSTEM. a. FUEL  PRESS  Warning  Annunciator  Illuminated. Illumination   of   the   #   1   or   #   2   FUEL   PRESS   warning annunciator   usually   indicates   failure   of   the   respective engine-driven boost pump.  Perform the following: (1) STANDBY PUMP switch - ON. (2) FUEL PRESS annunciator - Check extinguished. (3) FUEL  PRESS  annunciator  still  illuminated - Record unboosted time. (4) Monitor system for further abnormal indications. b. NO FUEL XFER Caution Annunciator Illuminated.  Illumination of a  # 1  or  #  2  NO  FUEL  XFR annunciator     with     fuel     remaining     in     the     respective auxiliary  fuel  tank  indicates  a  failure  of  that  automatic fuel transfer system.  Proceed as follows: (1) AUX XFER switch (affected side) -  OVRD. (2) Auxiliary fuel quantity - Monitor. (3) AUX XFER switch (after respective auxiliary  fuel  has  completely  transferred)  - AUTO. c. Nacelle   Fuel   Leak .      If   nacelle   fuel   leaks   are evident, perform the following: 1. Engine shutdown (affected engine)     - Perform. 2. FIRE PULL handle - Pull. 3. Land as soon as practicable. d. Fuel Crossfeed.  For fuel crossfeed, perform the following: (1) AUX XFER switches - AUTO. NOTE With   the   FIRE   PULL   handle   pulled, the  fuel  in  the  auxiliary  tank  for  that side  will  not  be  available  (usable)  for crossfeed. (2) STANDBY PUMP switches - Off. (3) CROSSFEED switch - As required. (4) FUEL- CROSSFEED annunciator illuminated - Check. NOTE With   the   FIRE   PULL   handle   pulled, the    FUEL    PRESS    annunciator    will remain illuminated on the side supplying fuel. (5) FUEL PRESS  annunciator  extinguished  - Check. (6) Fuel quantity - Monitor. e. NAC LOW Annunciator Illuminated.    Illumination of the  # 1 or # 2 NAC LOW caution annunciator indicates that  the  affected  tank  has  approximately  30  minutes  (58 gallons)    of    usable    fuel    remaining    at    sea    level,    at maximum  cruise  power  consumption  rate.    Proceed  as follows: WARNING Failure     of     the     fuel     tank     venting systems  will  prevent  the  fuel  in  the wing  tanks  from  gravity  feeding  into the  nacelle  tank.    Fuel  vent  system failure may be indicated by illumination   of   the   #   1   or   #   2   NAC LOW  caution  light  with  greater  than 30 minutes of usable fuel indicated in the  main  tank  fuel  system.    The  total usable fuel remaining in the main fuel supply    system    with    the    low    fuel caution  light  illuminated  may  be  as little as 140 pounds, regardless of the total fuel quantity indicated. Continued flight may result in engine flameout due to fuel starvation. 1. Land as soon as practicable. 9-11