NONE · BOEING 787 · 2012-07-28 · Charleston, SC, USA
Event
NTSB number
DCA12IA114
Event ID
20120728X22222
Type
Incident
Date
2012-07-28
Location
Charleston, SC, USA
Coordinates
32.898612, -80.040557
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
5
Total aboard
5
Aircraft
Make
BOEING
Model
787
Registration
VT-ANJ
FAR Part
091
Engines
—
Damage
MINR
Conditions
Light
DAYL
Weather
VMC
Probable cause
The separation of the fan mid shaft resulted from environmentally assisted cracking under static load. Contributing to the incident was the combination of dry film lubricant applied to the fan mid-shaft and graphite grease used during assembly which made the fan mid-shaft susceptible to corrosion from trapped moisture, and the failure of the engine manufacturer to identify this vulnerability during design/development.