As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO EGT AFTER START LEVER RAISED TO IDLE ON ENGINE NUMBER 2. GROUNDED - YES. SWITCHED IGNITION TO LEFT, ATTEMPTED TO START NR 2 ENGINE THIS TIME THE EGT WENT TO ABOUT 600 AND ROLLED BACK WITH EGT LIGHT FLASHING AND ENGINE STARTED SPOOLING DOWN. CREW SAID N2 NEVER REACHED STARTER CUT OUTSPEED. CDU DOES NOT SHOW ANY FAULTS AT ALL AND NO FUEL RESIDUAL IN TAIL PIPE. REPLACED HMU PER T/C N8473001, STARTED ENGINE SEVERAL TIMES, ALL STARTS NORMAL.