NONE · Boeing 747-269B · 1999-07-29 · ANCHORAGE, AK, USA
Event
NTSB number
ANC99LA099
Event ID
20001212X19142
Type
Accident
Date
1999-07-29
Location
ANCHORAGE, AK, USA
Coordinates
61.159626, -149.990966
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
5
Total aboard
5
Aircraft
Make
Boeing
Model
747-269B
Registration
N707CK
FAR Part
121
Engines
4
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
The failure of a turbine blade, and subsequent penetration of the shroud (containment ring). A factor associated with the accident was the FAA's insufficient design standards/requirements addressed in an FAA Air Worthiness Directive, which called for a strengthened containment ring. The failed containment ring was in compliance with the Air Worthiness Directive.