# NTSB CHI92IA068: British Aerospace BAE-ATP, N852AW, Fort Wayne, IN, January 8, 1992

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: January 8, 1992, 11:30 local (16:30 UTC)
- Place: Fort Wayne, IN
- Coordinates: 41.099021, -85.059478 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.0990&lon=-85.0595&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 16 uninjured
- Status: Completed, report May 26, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 15322
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI92IA068
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15322/pdf
- Page: https://openairdocs.org/ntsb/CHI92IA068

## Probable cause

FAILURE OF COMPANY MAINTENANCE PERSONNEL TO MAINTAIN THE AIRPLANE IN ACCORDANCE WITH EXISTING SERVICE BULLETINS.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Airframe/component/system failure/malfunction, descent - normal
  - autopilot/flight director - failure,partial
  - electrical system - not maintained, company maintenance personnel (cause)
  - acft/equip,inadequate compliance determination, company maintenance personnel
  - fire warning system,powerplant - false indication

## Analysis

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.

## Aircraft

- Registration: [N852AW](https://openairdocs.org/deregistered/N852AW-2001-01-09), registration cancelled 2001-01-09, S/N 2021 (OpenAirDocs)
- Reported make and model: BRITISH AEROSPACE BAE-ATP
- Registry model: [British Aerospace BAE ATP](https://openairdocs.org/model/british-aerospace-bae-atp) (registry code 1500300) (OpenAirDocs)
- Category: Airplane
- Serial number: 2021
- Engines: P&W PW126A 2653 horsepower turbo prop
- Damage: No damage
- Flight: Part 121
- Operator: Air Wisconsin Airlines
- Registered owner: Air Wisconsin Airlines
- Airworthiness certificate: Standard, Transport
- Last inspection: Continuous airworthiness, January 2, 2000
- Departed: ORD, CHICAGO, IL
- Flight plan: IFR
- Airport: FWA, Baer Field, runway 14, 8,500 × 150 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 51; airline transport; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 3,028 total, 447 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 130° at 10 knots
- Visibility: 3 statute miles
- Lowest ceiling: 6,500 ft overcast
- Temperature: 34 °F, dew point 30 °F
- Altimeter: 30.00 inHg
- Observed at: FWA, 1 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Incident 19920108003949I](https://openairdocs.org/incident/19920108003949I), Jan 8, 1992: Bag ATP, Fort Wayne, IN. Experienced electronic blackout during static discharge. Shut NR2 engine down and landed at destination.

## Other investigations on N852AW (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CHI93LA327](https://openairdocs.org/ntsb/CHI93LA327), May 7, 1993: British Aerospace ATP (N852AW), Green Bay, WI, no damage. Probable cause: the passenger's loss of footing (miscellaneous).

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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