TM  1-1520-240-10            9-1-19 Conversely, if the failure occurred at a low power setting, the malfunctioning engine will provide little or no power upon demand. These indications must be confirmed by observing the engine instruments display since the non- malfunction engine could have low or high torque in com- parison to the fixed fuel flow engine. This fixed fuel flow condition may cause an increase in NR when THRUST CONT lever is reduced. Another indi- cation would be a split in TQ with upward or downward THRUST CONT applications. This  fixed  fuel  condition  may  be  capable  of  providing partial power at THRUST CONT application depending on the power that was required when the system sus- tained the hard failure. Failure of the REV engine control system to a fixed fuel flow  may  require  the  engine  to  be  shutdown  at  some point before landing to prevent NR overspeed. Once the decision is made to shut down the engine and prior to pulling the T handle with the ENG COND lever in the FLT position, the pilot may attempt to regain control of the FADEC by toggling the FADEC switch from PRI to REV and back to PRI without hesitation between switch posi- tions. If the REV light is illuminated, the engine may not restart after shut-down. During Reversionary operation, there may be loud re- ports from the engine during low power condition includ- ing a bleed band malfunction. If this is encountred, mini- mize low power conditins on affected engine. 9-1-22. 714A REV 1 and/or REV 2 (WITHOUT) AS- SOCIATED FADEC LIGHT(s) ON. CAUTION Do not manually select reversionary mode on affected engine as uncommanded pow- er changes may occur. 9-1-23. 714A REV  1  or  REV  2  (WITH)  Associated FADEC LIGHT ON. The FADEC of the non affected engine will attempt to maintain 100% RRPM. If engine shutdown is required, positively identify the affected engine by observing en- gine instruments. 1.   Land as soon as possible. 2.   EMER ENG SHUTDOWN — As required. 9-1-24. 714A REV 1 and REV 2 (WITH) Associated FADEC LIGHTS ON. With both FADEC and REV lights illuminated, no engine or RRPM control will be provided by the FADEC. The decision to shutdown the engine(s) should be based on RRPM and fixed power output, keeping in mind the pow- er required for touchdown. 1.   Land as soon as possible. 2.   EMER ENG SHUTDOWN — As required. 9-1-25.  Engine   Transmission   Clutch   Failure   to Engage. An engine transmission clutch failing to engage is most likely  to  occur  when  the  engine  condition  lever  is  ad- vanced  from  GND  to  FLT  or  during  engine  start.  The indications  of  an  engine  transmission  clutch  failing  to engage are: a loss of torque indication for an engine or erratic torque indications for an engine or failure of the N1 of  an  engine  to  accelerate  past  70  percent  N1  when advancing the ENG COND lever to FLT. A sudden high torque clutch engagement may cause severe engine and/ or drive train damage. A sudden engagement is indicated by a loud noise and/or a sudden large increase in engine tor- que. Should the engine transmission fail to engage, perform the following: WARNING Do  not  shutdown  both  engines  simulta- neously.  Maintain  RRPM  with  the  engaged engine until affected engine N1 reaches zero (0). 1.   EMER ENG Shutdown  —  (Affected  en- gine). When N1 reaches (0): 2.   EMER  ENG  Shutdown  —  (engaged  en- gine). 9-1-26.  Engine  Shutdown  —  Complete  Electrical Failure. F 1.   FUEL   VALVE   #1   and   #2   ENGINE   — CLOSE. 2.   Normal shutdown — Perform. 9-1-27.  Engine Shutdown — Condition Lever Failure. Should the engine condition lever fail to shut down or control an engine, use the following procedure for engine shutdown. 1.   FIRE PULL handle (affected engine) — Pull. 2.   Normal shutdown — Perform.