Pilot Debrief

PIPER PA 32-300 near Ardmore, OK — 2014-08-16

Final reportCEN14FA434
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Date
2014-08-16
Location
Ardmore, OK, USA
Airport
1F0
Aircraft
PIPER PA 32-300
Registration
N4125W
Category
Airplane
Highest injury
Fatal
Fatalities
1
Phase of flight
Takeoff roll

Probable cause

The partial loss of engine power for reasons that could not be determined because thermal damage to the engine prevented a complete examination.

NTSB narrative

The airplane had been parked on the ramp for 2 to 3 months waiting for completion of engine maintenance work. The evening before the accident, the pilot and the passenger, who held a mechanic certificate, were seen replacing the engine's Nos. 4 and 6 cylinders. On the day of the accident, after a test run-up, the engine cowling was installed, and the airplane departed. Witnesses reported that the airplane used most of the 5,000-ft runway before lifting off and did not appear to be climbing normally when it disappeared out of sight. The passenger reported that, about the time the airplane became airborne, he heard a "metallic pop." Unable to stop the airplane on the runway in the remaining distance, the pilot continued the takeoff. The passenger added that the engine continued to run, but the airplane was not able to climb above a set of wires. Examination of the accident site determined that the airplane's landing gear struck a transmission power line, and the airplane impacted terrain about 0.82 mile southeast of the airport. Although the engine continued to run after takeoff, it is likely that it was not generating full power, and the airplane was unable to climb sufficiently to clear power lines. A postcrash fire consumed most of the airplane's cabin, part of the wings, and portions of the engine. Due to fire damage, only a limited examination of the airframe and engine could be done; the limited examination did not reveal any pre-impact abnormalities.

Analysis

Primary failure mode
Mechanical failure
First missed decision gate
Pilot could have aborted takeoff after hearing a 'metallic pop' from the engine.

NTSB coding

Evidence available

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

Docket documents8

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