TM  1-1520-240-10            9-1-23 NOTE LCT  and  DASH  actuators  will  remain  pro- grammed at the airspeed at which the gener- ators were turned off. Normal engine trim is disabled when generators are turned off. 2.   GEN 1 and 2 switches — OFF. 3.   Land as soon as possible. After landing: 4.   EMER ENG SHUTDOWN. 5.   BATT switch — OFF. 9-1-48.  Smoke and Fume Elimination. 1.   Airspeed — Above 60 KIAS. 2.   Pilot’s sliding window  — Open. 3.   Helicopter attitude —Yaw left, one half to one ball width on turn and slip indicator. 4.   Upper half of main cabin door — Open. O 5.   RAMP EMER switch — As required. NOTE The combination of steps 2, 3, and 4 effective- ly evacuates the cockpit and forward cabin of smoke  and  fumes  at  airspeeds  above  60 KIAS. Opening the cargo loading ramp evac- uates the main cabin. With items in steps 2, 4, and 5 opened, intensification of a smoldering fire may occur. If the source of the fire cannot be determined, close the cargo loading ramp but keep the pilot’s windows and the upper half  of  the  main  cabin  door  open.  This  will allow the pilots to see the instrument panels and outside references for landing. 6.   Cargo loading ramp — As required. 7.   Copilot’s sliding window — Closed. 8.   NVG curtain — Open (if applicable). 9-1-49.  Fuel System. 9-1-50.  Aux Fuel Pump Failure. An auxiliary fuel pump failure will be indicated by an AUX PRESS indicating light, on the FUEL CONTROL panel, illuminating and /or the fuel quantity in the affected tank remaining at the same level. Should this occur, proceed as follows: 1.   FUEL QUANTITY selector switch — Check. If one or both auxiliary fuel tanks have fuel remaining: 2.   AC-DC   FUEL   PUMP   circuit   breakers   — Check in. 3.   FWD  and  AFT  AUX  FUEL  PUMP  switches affected side) — OFF. 4.   AUX FUEL PUMP switch — ON (each aux tank with fuel remaining). If AUX PRESS indicating light remains on: 5.   AUX  FUEL  PUMP  switch(es)  (inoperative pump(s)) — OFF. Monitor FUEL QUANTITY indicator for the affected tank. 6.   AUX   FUEL   PUMP   switche(es)   —   ON   for operative    pumps    or    OFF    for    inoperative pumps. 9-1-51.  Fuel venting Fuel venting from either main tank vent indicates a possi- bility of fuel cell overpressurization. Should venting oc- cur: 1.   AUX FUEL PUMP switches (affected side) — OFF. 2.   Main tank (affected side) — Monitor. When 1,000 pounds of fuel remain: 3.   AUX FUEL PUMP switches — ON. (monitor fuel quantity). When tanks quantity reaches 1,600 pounds: 4.   AUX FUEL PUMP switches — OFF. 5.    Steps 2 through 4 — Repeat until auxiliary tanks are empty. 9-1-52.  L or R FUEL PRESS Caution. If both main tank fuel pumps fail, fuel will be drawn from the  main  tanks  as  long  as  the  helicopter  is  operated below 6,000 feet pressure altitude. If the L or R FUEL PRESS caution comes on: 1.   XFEED switch — OPEN (above 6,000 feet PA). 2.   FUEL PUMP (S) circuit breakers — Check in. Pump(s) are operational — Proceed with step 3. Pumps are not operational — Proceed with step 4. 3.   XFEED switch — CLOSED. 4.   FUEL  PUMP  switches  —  OFF  (inoperative pump(s). 9-1-53.  Fuel Low Caution. If the FUEL LOW and FUEL PRESS cautions come on perform the following: 1.   Fuel quantity — Check individual tanks. 2.   XFEED switch — As required. 3.   Land as soon as practicable.