NONE · AIRBUS A330 223 · 2016-10-26 · Seattle, WA, USA
Event
NTSB number
ENG17IA003
Event ID
20161027X90950
Type
Incident
Date
2016-10-26
Location
Seattle, WA, USA
Coordinates
47.447223, -122.314163
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
120
Total aboard
120
Aircraft
Make
AIRBUS
Model
A330 223
Registration
N855NW
FAR Part
121
Engines
2
Damage
—
Conditions
Light
DAYL
Weather
Unk
Probable cause
A No. 1 engine fire caused by a fuel manifold supply line high cycle fatigue crack which led to a fuel leak that subsequently ignited on hot engine case surfaces. The fatigue crack originated and progressed due to elevated fuel manifold assembly vibration levels. Engine vibration testing identified a combustor tone that excites a natural (resonant) frequency of the fuel manifolds at specific engine speeds on Pratt & Whitney PW4000-94 and -100 inch fan series engines that feature a TALON II combustor.