Pilot Debrief

PIPER PA-28-180 near Naytahwaush, MN — 2009-11-14

Final reportCEN10LA055
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Date
2009-11-14
Location
Naytahwaush, MN, USA
Aircraft
PIPER PA-28-180
Registration
N7736N
Category
Airplane
Highest injury
Fatal
Fatalities
1
Phase of flight
Cruise

Probable cause

The non-instrument rated pilot's decision to continue the flight into known instrument meteorological conditions resulting in spatial disorientation and impact with terrain.

NTSB narrative

The non-instrument rated pilot received an outlook weather briefing about 6 hours before the accident flight. The briefer informed the pilot that instrument flight conditions existed and were expected to continue with improvement expected the following day. There were no records of additional weather briefings before the accident flight. Weather and global positioning system data showed that the airplane flew into an area of instrument weather conditions about 210 nautical miles into the 290 nautical mile night cross-country flight. The GPS data showed that in the last minute of the flight the airplane turned left from a heading of about 340 degrees to 300 degrees, followed by a right turn to a heading of 015 degrees which corresponded to the last recorded position. The airplane's average groundspeed during the last 20 seconds of the recorded data was about 120 knots. The recorded cloud base heights at airports near the accident site were as low as 400 feet overcast east of the accident site with higher cloud bases to the west of the accident site. It is likely that the sustained turn sequences while in night instrument meteorological conditions resulted in spatial disorientation. The airplane impacted trees and terrain, and a post-impact fire ensued. No pre-impact anomalies were found with respect to the airplane or its systems.

Analysis

Primary failure mode
VFR into IMC
First missed decision gate
Pilot should have canceled the flight due to IFR conditions after weather briefing.

NTSB coding

Evidence available

  • ADS-B / radar
  • 5 docket documents
View NTSB final reportView NTSB docket

Docket documents5

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