NTSB Identification: CHI96IA191.
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Scheduled 14 CFR
Incident occurred Thursday, June 06, 1996 in LANSING, MI
Probable Cause Approval Date: 03/31/1998
Aircraft: Beech 1900, registration: N81538
Injuries: 18 Uninjured.

NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.

The pilot-in-command reported smelling smoke during descent. Smoke was coming out of the bottom left corner of the first officer's windscreen. The first officer, using the portable halon fire extinguisher, extinguished a 6 to 8 inch flame that had erupted from behind the glareshield. The PIC completed the approach and landing. Examination of the windshield by the manufacturer indicated that the source of the excessive heat that caused the windshield and aircraft materials to smoke and ultimately burn, was determined to be arcing of a damaged low power braided copper lead wire. The examiner reported that, 'It is, however, our opinion that the damage was done to the braid wire during the windshield manufacturing process.' The origin of the fracture of the inboard glass ply was in the bottom center post corner area located near the low power terminal block. The examiner reported that, 'the glass fracture occurred as a result of the intensive heat due to electrical arcing of the severed low power lead wire.'

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

the short in the windshield anti-ice low power braided copper lead wire caused a fire that had resulted from the manufacturer's inadequate design.

Full narrative available

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