As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE WILL NOT REACH TAKEOFF POWER; REPORTED BY CREW. MAINTENANCE TROUBLE SHOOTING FOUND THE AFT PT7 LINE LOOSE. SECURED THE LINE; RAN ENGINE TO POWER. ALL PARAMETERS, OPS AND LEAK CHECK GOOD. SYSTEM CHECK OK. AIRCRAFT RETURNED TO SERVICE.