As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM: HUNG START ON NR 1 ENGINE. PERFORMED T/S ON NR 1 ENGINE MANUAL STARTED NR 1 STARTER & NO ISSUE FOUND DURING NR 1 ENGINE START. ALL PARAMETERS WERE WITHIN LIMITS IAW B737-400 AMM 71-00-00 & AMM 71-00-41 FIG 108 BLOCK 1.