Pilot Debrief

WSK PZL MIELEC M-18 DROMADER near Freeport, IL — 2011-08-26

Final reportCEN11LA605
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Date
2011-08-26
Location
Freeport, IL, USA
Airport
FEP
Aircraft
WSK PZL MIELEC M-18 DROMADER
Registration
N7070L
Category
Airplane
Highest injury
Serious
Fatalities
0
Phase of flight
Takeoff roll

Probable cause

The pilot's decision to operate the airplane with a known defect in the elevator control system that led to his inability to control the airplane during the initial climb.

NTSB narrative

The pilot reported that the airplane would not climb after takeoff, and it stalled, impacted the field, and then nosed over. Postaccident examination revealed that the forward elevator push rod was bent. The bend did not appear to have occurred during impact. Further examination revealed that the up elevator travel was 15 degrees. Manufacturer specifications called for 27 degrees of up elevator travel. Marks on the aft elevator push rod indicated that a plier’s tool had been improperly used on the push rod, which left marks from the tool and a dent in the push rod. A shipment for the pilot/owner arrived at the airport after the accident that contained a new elevator push rod. The shipping label indicated that the package was shipped on the day of the accident. Based on this evidence, it is likely that the up elevator travel was limited and that the pilot was aware of this defect prior to the accident flight.

Analysis

Primary failure mode
Mechanical failure
First missed decision gate
Pilot could have delayed takeoff until elevator push rod was replaced.

NTSB coding

Evidence available

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

Docket documents9

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