WPR12CA041

NTSB accident investigation · American Champion 8GCBC · Ashton, ID · November 20, 2011

Accident · No injuriesData collectionFinal report
Date
November 20, 2011, 12:30 local (19:30 UTC)
Place
Ashton, ID
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N131PMAmerican Champion 8GCBC
Defining event
Landing-landing roll: Nose over/nose down
Weather
Visual (VMC) · Day
Status
Completed · report March 8, 2012
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20111120026019A
Case key
82351

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The student pilot’s poor decision-making when he decided to land on a snowy grass airstrip, which resulted in an encounter with deep snow during the landing roll and a subsequent nose-over.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Info processing/decision: understanding/comprehensionPersonnel issues › Action/decision · Student/instructed pilotAmerican Champion 8GCBC: 1 caseAll aircraft: 70 casesProbable cause
Action: incorrect action selectionPersonnel issues › Action/decision · Student/instructed pilotAmerican Champion 8GCBC: 1 caseAll aircraft: 397 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The student pilot reported that he approached the privately-owned, rough grass airstrip and observed that it was covered with snow. After evaluating the snow’s depth as being only a few inches, the pilot landed. During the landing roll, the airplane decelerated quickly and nosed over, bending the vertical stabilizer, wings, and lift struts. After exiting the airplane, the pilot realized that the snow was between 6- and 8-inches deep. The student pilot’s certified flight instructor reported that he had not endorsed the student’s flight record logbook in over 90 days, and he had not authorized the student to fly to the accident airport. The student was not current in the airplane.

Factual narrative

The student pilot reported that he approached the privately owned rough grass airstrip and observed that it was covered with snow. After evaluating the snow’s depth as being only a few inches, the pilot landed. During rollout, the airplane decelerated quickly and nosed over, bending its vertical stabilizer, wings, and lift struts. Upon exiting the airplane, the pilot ascertained that, in fact, the snow was between 6 and 8 inches deep. The student pilot’s certified flight instructor reported that he had not endorsed the student’s flight record logbook in over 90 days, and he had not authorized the student to fly to the accident airport. The student was not current in the airplane.

Aircraft

Registration
N131PM
Reported as
American Champion 8GCBC
Category
Airplane
Serial number
462-2004
Airframe hours
656
Engine
Lycoming O-360 SERIES, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 10, 2011 · 214 hours before
Departed
NONE · Ririe, ID
Destination
NONE · Ashton, ID
Airport
NONE · Private Airstrip, No Name, runway 02, 2,500 × 60 ft, grass/turf

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Student pilot
Age
44
Injuries
None
Certificate
Student
Medical
Class 3, Without waivers/limitations
Seat
Front
Flight hours
150 total · 150 in this make and model · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
50 statute miles
Lowest ceiling
None
Temperature
28 °F

Docket · 2

The files NTSB released with the investigation on January 5, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 469 KB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.