Pilot Debrief

BEECH 35-A33 near Pittsburgh, PA — 2010-04-05

Final reportERA10LA210
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Date
2010-04-05
Location
Pittsburgh, PA, USA
Airport
AGC
Aircraft
BEECH 35-A33
Registration
N156J
Category
Airplane
Highest injury
None
Fatalities
0
Phase of flight
Takeoff roll

Probable cause

A fire of undetermined origin behind the left instrument panel.

NTSB narrative

During the takeoff roll, the pilot smelled and saw smoke emanating from the instrument panel. He aborted the takeoff, exited the runway, and shut off the master and alternator switches. The smoke continued to emanate from the instrument panel so the pilot elected to shutdown the engine and both occupants exited the airplane. Paint blistering was observed on the left side of the airplane in the vicinity of the instrument panel. The cabin area and the roof structure were consumed by fire, resulting in substantial damage to the airplane. The pilot stated that he purchased the airplane approximately six months prior to the accident, but the airplane and engine logbooks were lost prior to the purchase. After the pilot purchased the airplane, it was inspected in accordance with regulations, but no work was performed on the avionics or wiring other than replacing the altitude encoder. Two years prior to the accident, the manufacturer issued a communiqué that required an inspection for wire chaffing after any maintenance work, and during an annual inspection with special emphasis on examining the areas with considerable amount of movement. It further stated that the area between the instrument panel and the firewall not only had the greatest concentration of wiring, but also had moving components that could damage improperly secured wiring in a very short time. A postaccident inspection by a Federal Aviation Administration inspector revealed that the area of the origin for the fire was the left forward section of the instrument panel, in the vicinity of the communication radios, circuit breakers, and electrical bus bar. The exact source of the fire could not be determined.

Analysis

Primary failure mode
Mechanical failure
First missed decision gate
Pilot could have aborted takeoff earlier upon detecting smoke.

NTSB coding

Evidence available

  • Photos
  • 6 docket documents
View NTSB final reportView NTSB docket

Docket documents6

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