Sep 6, 2017
Incident
Las Vegas, NV
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 121
Probable Cause
A No. 1 (left) engine undercowl fire caused by a fuel nozzle installation error during engine overhaul at Delta TechOps. A fuel nozzle b-nut was cross threaded, which allowed fuel to leak on hot engine case surfaces and subsequently ignite.
NTSB ENG17IA036