SERS · Boeing 757-2S7 · 1999-09-20 · AGUA CALIENTE, AZ, USA
Event
NTSB number
LAX99FA315
Event ID
20001212X19792
Type
Accident
Date
1999-09-20
Location
AGUA CALIENTE, AZ, USA
Coordinates
32.940097, -113.340454
Injuries
Highest injury
SERS
Fatal
0
Serious
2
Minor
2
Uninjured
173
Total aboard
177
Aircraft
Make
Boeing
Model
757-2S7
Registration
N904AW
FAR Part
121
Engines
2
Damage
—
Conditions
Light
DAYL
Weather
IMC
Probable cause
the systemic failure of the airline's maintenance department to identify and correct the long standing history of intermittent faults, nuisance warnings, and erratic behavior in this airplane's GPWS system. Also causal is the airline's failure to perform the service bulletins and service letter upgrades to the system, which would have eliminated or greatly reduced the likelihood of this particular nuisance warning, a condition that was identified and corrected by the manufacturers 11 years prior to the accident, and was the subject of one or more of the SB/SL upgrades.