STARTING ENGINES

TM 1-1520-238-MTF Change 4 2-56 PROCEDURE TROUBLESHOOTING REFERENCE AFTER STARTING APU (CONT) l. Fuel CROSSFEED switch – NORM. Verify fuel BOOST switch disengages and BOOST PUMP ON caution/warning light extinguishes. *29. Engine reinstallation/replacement checks – As required. Refer to Chapter 4, paragraph G. **STARTING ENGINES – PILOT NOTE · Verify HARS aligned and correlates to magnetic compass. · Compute time to idle using chart in Chap- ter 5 prior to starting engines. · Verify HARS aligned and correlates to magnetic compass. Verify NAV STA- TUS PAGE on CDU; INS GO, GPS GO, DNS GO, and HARS GO. 1. SHAFT DRIVEN COMP caution/warning segment – Verify Off. WARNING Aborted engine starts may cause fuel to collect in the engine nacelle. Sub- sequent engine starts may be attempted only after the nacelle door/work platform is opened and the nacelle inspected for fuel. If during the initial start an abnormal TGT rise was evident, or fuel is evident in the nacelle, the ignition system shall be checked IAW standard maintenance pro- cedures.