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9.  Emergency Floodlights
19.   Avionics

TM-1-1520-240-MTF Army Model CH-47D Heilcopter (EIC:RCD) Manual
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TM 1-1520-240-MTF 2-36 STARTING ENGINES (CONT.) NOTE Allow   one   minute   for   cooling   between   APU shutdown and restart. Failure to do so may result in   a   premature   shutdown   on   restart   due   to overtemperature. B*  13.   APU START — Check as follows: a.   APU ON caution/advisory light illuminated. b.   UTIL HYD SYS caution — Check out. If the light does not go out within 30 seconds of operation,  shut  down  the  APU.  Have  the utility system checked. B*  14.   APU GEN switch — ON. Check as follows: a.   NO. 1 and NO. 2 REC OFF caution out. b.   Avionics cooling fan on. c.   VGI alignment within 90 seconds. 15.  GPU — Disconnect if used. Check EXT PWR light out. B*  16.   POWER XFR No. 1 and No. 2 switches — ON. Check HYD FLT CONT caution lights out within 30   seconds.   If   not   out   within   30   seconds POWER XFR No. 1 and No. 2 switches off, do not fly the aircraft. BF* 17.   Maintenance panel — Check as follows: F a.   #1   and   #2   HYD   FLT   Control   pressures within 2500 - 3200 PSI, $ 50 PSI maximum fluctuation. F b.   Utility hydraulic pressure within 2500 - 3500 PSI, $50 PSI maximum fluctuation.







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