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1.  Maximum Continuous Power (MCPC)/Maximum Power Check (MPC)
k.   Allow conditions to stabilize

TM-1-1520-240-MTF Army Model CH-47D Heilcopter (EIC:RCD) Manual
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TM 1-1520-240-MTF 4-25 g.   Allow conditions to stabilize and record the following: (1)   FAT. (2)   PA. (3)   RRPM. (4)   ENG PTIT. (5)   N1. (6)   TRQ. (7)   FF. h.   Recover engine not being tested by placing the ENG COND lever to FLT position. (1)   Engine passes test if the PTIT recorded in  paragraph  K.g.(4)  is  less  than  or equal  to  the  MCPC  temperature  limit from   figure   5-13   and   the   maximum continuous N1 speed from figure 5-14 (Refer to Section V.) is not exceeded. (2)   Record the TEMP MARGIN VALUE by subtracting the recorded PTIT found in paragraph   K.g.(4)   from   the   MCPC temperature limit from figure 5-13.(e.g. Recorded   PTIT   is   775.   806-775=31 TEMP MARGIN VALUE). i.   Repeat steps a. through h. for engine not previously tested. j.   If  engine  fails  use  Maximum  Continuous Power   Check   (MCPC)   follow   the   steps below. (1)   Continue   retarding   the   ECL   and/or raising  the  THRUST  CONT  lever,  if required,   to   obtain   minimum   TRQ while    ensuring    maximum    PTIT    or maximum N1 of figures 5-14 and 5-13 are not exceeded.







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