NONE · Sikorsky S-70A · 2004-08-30 · Pacoima, CA, USA
Event
NTSB number
LAX04IA311
Event ID
20040929X01532
Type
Incident
Date
2004-08-30
Location
Pacoima, CA, USA
Coordinates
34.259723, -118.413612
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
3
Total aboard
3
Aircraft
Make
Sikorsky
Model
S-70A
Registration
N160LA
FAR Part
091
Engines
2
Damage
MINR
Conditions
Light
DAYL
Weather
VMC
Probable cause
the failure of the operator's mechanics to install the turboshaft engine's forward curvic seal during a gas generator turbine (GGT) replacement. Contributing factors to the incident were the failure of the manufacturer to provide a forward curvic seal with the replacement GGT, and the lack of a curvic seal installation verification inspection in the maintenance manuals following the GGT installation.