As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU START 15-20 PSI RT ENG BEGAN TO START W/N2 AT LEAST 8 THEN ROLLED BACK. START VALVE LITE NORMAL. TRIED AIR FROM LT ENG NR N2 OR OIL PRESS. REMOVED AND REPLACED NR 2 ENG STARTER. OPS CKS NML. INSTALLED STARTER BORROWED FROM AIR CANADA AIRLINES MFG P/N 774860A4 S/N MK94194 LEAK CK GOOD. STARTER SERVICED WITH MODIL II OIL.