SERS · BOEING COMPANY BOEING 777-236 · 2015-09-08 · Las Vegas, NV, USA
Event
NTSB number
DCA15FA185
Event ID
20150908X35241
Type
Accident
Date
2015-09-08
Location
Las Vegas, NV, USA
Coordinates
36.083057, -115.15139
Injuries
Highest injury
SERS
Fatal
0
Serious
1
Minor
19
Uninjured
151
Total aboard
171
Aircraft
Make
BOEING COMPANY
Model
BOEING 777-236
Registration
G-VIIO
FAR Part
129
Engines
2
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
The failure of the left engine high-pressure compressor (HPC) stage 8-10 spool, which caused the main fuel supply line to become detached from the engine main fuel pump and release fuel, resulting in a fire on the left side of the airplane. The HPC stage 8-10 spool failed due to a sustained-peak low-cycle fatigue crack that initiated in the web of the stage 8 disk; the cause of the crack initiation could not be identified by physical inspection and stress and lifing analysis. Contributing to this accident was the lack of inspection procedures for the stage 8 disk web.