ANC11CA106

NTSB accident investigation · Piper PA-12 · Beluga, AK · September 23, 2011

Accident · No injuriesData collectionFinal report
Date
September 23, 2011, 10:30 local (18:30 UTC)
Place
Beluga, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N78564Piper PA-12
Defining event
Takeoff: Collision during takeoff/land
Weather
Visual (VMC) · Day
Status
Completed · report December 27, 2011
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA FSDO-03
FAA report
20110923022739A
Case key
81882

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

On this page

Probable cause

The pilot's decision to take off uphill into rising terrain.

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.

Terrain: rough terrainEnvironmental issues › Physical environment · Contributed to outcomePiper PA-12: 5 casesAll aircraft: 442 cases
Aircraft capability: takeoff distanceAircraft › Aircraft oper/perf/capability · Capability exceededPiper PA-12: 2 casesAll aircraft: 67 cases

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 pilot elected to take off uphill from a remote site due to a light wind coming down the slope. He said that during the takeoff roll, the airplane hit a bump and became airborne prematurely. The airplane was unable to outclimb the rising terrain and vegetation. After the main landing gear encountered high vegetation, the airplane slowed, impacted terrain, and nosed over, sustaining substantial damage to the wings. There were no mechanical problems with the airplane prior to the accident.

Factual narrative

The pilot elected to takeoff from the remote site uphill, due to a light wind coming down the slope. During the takeoff roll, he said the airplane hit a bump, and became airborne prematurely. The airplane was unable to out climb the rising terrain and vegetation. The main landing gear encountered high vegetation, the airplane slowed, impacted terrain, and nosed over.

Aircraft

Registration
N78564
Reported as
Piper PA-12
Category
Airplane
Serial number
12-3939
Airframe hours
3,797
Engine
Lycoming O-320 SERIES, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Knutson Tad T
Registered owner
Knutson Tad T
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 6, 2010
Departed
Beluga, AK
Destination
Beluga, AK

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
Pilot
Age
37
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
January 30, 2010
Seat
Front
Flight hours
632 total · 553 in this make and model · 328 as pilot in command · 60 in the last 90 days · 43 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 5 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
45 °F

Docket · 1

The files NTSB released with the investigation on November 9, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 639 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.

Other investigations on N78564 · 1

Matched to the same aircraft by N-number and date.