TM  1-1520-240-10 4-1-16            d.   BIT checks and reports system status in one pass if expendables are installed in all four dispensers. If only one maga- zine is installed, BIT must be initiated each time the magazine is moved to a different dispenser, or a new magazine is installed. NOTE Faults detected during BIT are stored in the DCDU  programmer  memory.  NO-GO  indi- cates the system has detected a fault which must be corrected prior to resuming CMDS operation. Maintenance must be performed to   correct   the   fault   prior   to   clearing   the memory. e.   To clear a fault indication from memory after    maintenance    has    been    per- formed,   momentarily   press   ENT/BIT switch. If no other faults are identified, system inventory will be displayed. 4-1-25.  Flight Operations. WARNING Missions in a threat environment require the AN/ALE-47 Countermeasure Dispens- er  System  to  loaded  with  Advanced  In- frared Counter-measures Munitions (AIR- CMM) flare combination. The dispenser is divided  into  3  zones  and  each  zone  is loaded with 10 of the same type flares. A correctly  loaded  dispenser  will  have  an equal number of M206, XM211 and XM212 Aircraft    Countermeasure    Flares.    This combination   provides   optimal   counter- measure capability. Deviations from this AIRCMM   flare   combination   will   signifi- cantly reduce countermeasure capability and  increase  aircrew  vulnerability  to  In- frared  (IR)  missile  threats.  Aircraft  shall not be flown into threat environments with any combination of flares other than this AIRCMM flare solution unless authorized by the unit commander. Failure to comply could result in death or injury to personnel or damage to equipment. Follow all procedures carefully. All coun- termeasure expendables can cause injury and serious damage to equipment. CAUTION The DCDU MODE switch should be placed to OFF or STBY for takeoffs and landings. Additional safeing of the system would in- clude inserting the safety pin in the safety switch located in the aft cabin at station 518 BL50L. 1.   AN/ALE-47 safety switch pin — Removed. 2.   DCDU switches — Set as follows: a.   MODE — MAN, SEMI, or AUTO as re- quired. b.   MWS switch — ON (if AUTO dispense of expendables is desired). c.   O1, O2, CH. and FL switches — ON. As required   (Indicator   lights   not   illumi- nated). NOTE Current   programming   enables   AUTO   and MAN dispense of expendables while in SEMI mode when MWS switch is ON. d.   To initiate flare dispense, after MODE switch is set to MAN, SEMI, or AUTO, press FLARE DISP switch on the pilot’s or copilot’s cyclic grip or press any of the    four    hand-held    crew    dispense switches located in the cabin at station 200 and 400 left and right. e.   MANUAL switch — Set to any program 1 through 4, as required. f.   To dispense using manual program 6 (not selected o the DCDU), set MODE switch to MAN; Manual switch in any position; and press any of the four crew dispense switches in the cabin at sta- tion 200 and 400 left and right. CAUTION If  jettison  is  attempted  and  no  expend- ables  jettison,  set  JETTISON  switch  to OFF, and reset CMDS system by turning the  DCDU  MODE  switch  to  OFF,  then  to STBY, MAN, SEMI, or AUTO. Reattempt jet- tison by setting JETTISON switch to ON. 3.   Jettison is inhibited with safety pin installed in safety switch. 4.   If an in-flight emergency is evident and pay- load jettison is required: JETTISON switch — Raise switch guard, set switch to ON. All expendables should jettison.