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NTSB Report
January 8, 1992 · British Aerospace Bae-Atp · N852AW
Fort Wayne, IN
Overview
Report Status
Probable Cause
Event Type
Incident
Date
January 8, 1992
Injury Outcomes
No injuries (16 uninjured)
Location
Fort Wayne, IN
Aircraft
British Aerospace Bae-Atp
Tail Number
N852AW
Operator
Air Wisconsin Airlines
Injuries
None
NTSB Number
CHI92IA068
WHEN A DESCENT WAS COMMENCED FROM 11,000 FEET, MULTIPLE STATIC DISCHARGES OCCURRED ON BOTH THE CAPTAIN'S AND FIRST OFFICER'S WINDSHIELDS, FOLLOWED BY LOSS OF BOTH THE CAPTAIN'S AND FIRST OFFICER'S EFIS DISPLAYS. THE FLIGHT WAS CONTINUED TO THE DESTINATION ON PRIMARY FLIGHT DISPLAYS. ENROUTE A RIGHT ENGINE FIRE WARNING INDICATION WAS RECEIVED. THE FLIGHT LANDED WITHOUT FURTHER INCIDENT AND A SUBSEQUENT EXAMINATION REVEALED THAT 24 STATIC DISCHARGE WICKS WERE FOUND TO BE DEFECTIVE. SEVERAL STATIC WICKS WERE NOT BONDED TO THE AIRFRAME. OTHER SIMILAR BONDING PROBLEMS WERE FOUND ON THE AIRPLANE. THE FAILURE OF THE ENGINE FIRE WARNING SYSTEM WAS TRACED TO A CONTAMINATED ELECTRICAL CONNECTOR.
NTSB Probable Cause
FAILURE OF COMPANY MAINTENANCE PERSONNEL TO MAINTAIN THE AIRPLANE IN ACCORDANCE WITH EXISTING SERVICE BULLETINS.
Full Narrative
WHEN A DESCENT WAS COMMENCED FROM 11,000 FEET, MULTIPLE STATIC DISCHARGES OCCURRED ON BOTH THE CAPTAIN'S AND FIRST OFFICER'S WINDSHIELDS, FOLLOWED BY LOSS OF BOTH THE CAPTAIN'S AND FIRST OFFICER'S EFIS DISPLAYS. THE FLIGHT WAS CONTINUED TO THE DESTINATION ON PRIMARY FLIGHT DISPLAYS. ENROUTE A RIGHT ENGINE FIRE WARNING INDICATION WAS RECEIVED. THE FLIGHT LANDED WITHOUT FURTHER INCIDENT AND A SUBSEQUENT EXAMINATION REVEALED THAT 24 STATIC DISCHARGE WICKS WERE FOUND TO BE DEFECTIVE. SEVERAL STATIC WICKS WERE NOT BONDED TO THE AIRFRAME. OTHER SIMILAR BONDING PROBLEMS WERE FOUND ON THE AIRPLANE. THE FAILURE OF THE ENGINE FIRE WARNING SYSTEM WAS TRACED TO A CONTAMINATED ELECTRICAL CONNECTOR.
Flight
Event TypeIncident
Event Time11:30 EST
Nearest AirportBaer Field (0nm)
Runway14
Runway Length8500 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBritish Aerospace Bae-Atp
Tail NumberN852AW
Aircraft CategoryAir
OperatorAir Wisconsin Airlines
Operating RulePart 121
Engines2
Engine TypeTurboprop
Engine DetailsP&W · PW126A · Turboprop · 2653
Seats64
People & Injuries
Injury SummaryNo injuries (16 uninjured)
Fatal0
Serious0
Minor0
Uninjured16
Total16
Crew 1Age 51 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind130° @ 10 kt
Visibility3 sm
CeilingOvercast 6500 ft
Temperature / Dew Point34 C / 30 C
Altimeter30.00 inHg
Observation Time16:50
Weather SourceWFAC