2 fatal · McDonnell Douglas MD-88 · 1996-07-06 · PENSACOLA, FL, USA
Event
NTSB number
DCA96MA068
Event ID
20001208X06203
Type
Accident
Date
1996-07-06
Location
PENSACOLA, FL, USA
Coordinates
30.470479, -87.190536
Injuries
Highest injury
FATL
Fatal
2
Serious
2
Minor
3
Uninjured
137
Total aboard
144
Aircraft
Make
McDonnell Douglas
Model
MD-88
Registration
N927DA
FAR Part
121
Engines
2
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
the fracture of the left engine's front compressor fan hub, which resulted from the failure of Delta Air Lines' fluorescent penetrant inspection process to detect a detectable fatigue crack initiating from an area of altered microstructure that was created during the drilling process by Volvo for Pratt & Whitney and that went undetected at the time of manufacture. Contributing to the accident was the lack of sufficient redundancy in the in-service inspection program. (NTSB Report AAR-98/01)