Pilot Debrief

de Havilland DHC-6-200 near Baldwin, WI — 2008-06-29

Final reportCHI08LA190
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Date
2008-06-29
Location
Baldwin, WI, USA
Airport
WI14
Aircraft
de Havilland DHC-6-200
Registration
N203SF
Category
Airplane
Highest injury
None
Fatalities
0
Phase of flight
Descent

Probable cause

Undetermined.

NTSB narrative

The pilot reported that there were no observed anomalies with the left wing prior to the flight. During the flight, which was conducted as a local parachute operation, the pilot performed a descending turn. The left wing's aileron bound when the pilot attempted to level the bank. The pilot declared an emergency. The pilot and a passenger were able to exert enough force to the control wheel to regain control of the airplane and land safely. An on-scene examination of the airplane revealed damage to the left wing flap and aileron consistent with an overload event; however, the investigation could not definitively pinpoint the cause of the damage.

Analysis

Primary failure mode
Mechanical failure
First missed decision gate
Pilot could have aborted the descent before initiating the tight right turn.

NTSB coding

Evidence available

  • 3 docket documents
View NTSB final reportView NTSB docket

Docket documents3

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