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e.   Control interlock
Sand   and   debris   within   the   EAPS

TM-1-1520-240-MTF Army Model CH-47D Heilcopter (EIC:RCD) Manual
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TM 1-1520-240-MTF 2-47 STARTING ENGINES (CONT.) F (5)   Power XFR NO. 2 — OFF. Check NO. 2   HYD   FLT   CONTR   FLT   CONTR caution light out then on. Flight engineer announce  the  pressure  of  the  NO.  2 system when the NO. 1 system returns to normal pressure. (6)   POWER XFR NO. 2 — ON. Check NO. 2  HYD  FLT  CONTR  caution  light  out. NO. 1 HYD FLT CONTR caution light on. (7)   FLT  CONTR  HYDRAULIC  switch  — BOTH. f.   Control Centering — Control centering will hold cyclic and pedals within 1/2 inch from stops  —  Check  ability  to  override  control centering in all quadrants. g.   Flight Control — Neutralize (with DASH set to 36.0 inch and electronically disconnected neutral is - 3/4 inch). B 39.   Avionics — Perform operational check and set as required. BF*  40.    714A  DECU PRESTART BIT Check — Perform the following: a.   Back-up    power    switch    —    ON.    Check FADEC 1 & 2 capsules OUT. Check REV 1 & 2 and ENG FAIL 1 & 2 capsules — cycle ON then OUT within 12 seconds. b.   ENG COND levers — GND. F c.   Check both DECU displays read 88. If other than  88  on  either  DECU,  then  refer  to, DECU   Fault   Codes   in   Section   IV,   for evaluation. d.   ENG COND levers — STOP.







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