NONE · BOMBARDIER DHC-8-402 · 2013-03-05 · Danville, CA, USA
Event
NTSB number
WPR13IA144
Event ID
20130312X23544
Type
Incident
Date
2013-03-05
Location
Danville, CA, USA
Coordinates
37.839443, -122.003334
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
51
Total aboard
51
Aircraft
Make
BOMBARDIER
Model
DHC-8-402
Registration
N417QX
FAR Part
121
Engines
2
Damage
MINR
Conditions
Light
DAYL
Weather
VMC
Probable cause
The failure and separation of a section of the No. 2 engine's combustion chamber's small exit duct (SED), which created an airflow disruption that led to an engine surge and subsequent fire. Contributing to the accident was the insufficient weld penetration that remained totally contained within the SED outer dome and did not penetrate through to the inner duct as required by the manufacturing specifications.