ANC06LA107

NTSB accident investigation · Piper PA-22-150 · Deadhorse, AK · August 6, 2006

Accident · Serious injuriesLimited investigationFinal report
Date
August 5, 2006, 16:30 local (Aug 6, 2006, 00:30 UTC)
Place
Deadhorse, AK
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N3546PPiper PA-22-150
Weather
Visual (VMC) · Day
Status
Completed · report April 25, 2007
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Federal Aviation Administration
FAA report
20060806015839A
Case key
64300

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 pilot's failure to maintain adequate airspeed while on approach to land, which resulted in an uncontrolled descent and collision with terrain. A factor contributing to the accident was an inadvertent stall.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - in flightApproach
Airspeed(vs) - not maintainedPilot in commandCause
Stall - inadvertentPilot in commandFactor
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

The solo commercial pilot was landing at a remote off-airport site under Title 14, CFR Part 91. Prior to the accident flight, the pilot hiked about 1 mile to the accident airplane to disassemble a previous camp site, load the camp items into the airplane, then reposition the airplane closer to where he had shot a caribou earlier that day. A witness stated that the pilot made a series of low passes over his intended landing site. During the accident approach, while the airplane was about 100 feet agl, the airplane nosed down and collided with the ground in a near vertical attitude. The airplane sustained substantial damage to the wings, fuselage, and empennage. The pilot noted in his written statement to the NTSB that the last thing he can recall was while he was on final approach to the site, but he has no recollection of the accident. He also noted that there were no preaccident mechanical problems with the airplane.

Factual narrative

On August 5, 2006, about 1630 Alaska daylight time, a tundra tire-equipped Piper PA-22-150 airplane, N3546P, sustained substantial damage when it collided with the ground following a loss of control while landing at an off airport site, about 70 miles south of Deadhorse, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country personal flight under Title 14, CFR Part 91, when the accident occurred. The solo commercial certificated pilot received serious injuries. Visual meteorological conditions prevailed, and no flight plan was filed. The flight originated about 1620 from a remote campsite located about 1 mile from the accident location.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on August 8, North Slope Borough Public Safety dispatch personnel reported that they received the initial report of the accident about 1640, via the Alaska State Troopers central dispatch center located in Soldotna, Alaska. The call originated from a witness that dialed 911 on her satellite telephone immediately after the accident. A helicopter from the North Slope Borough Search and Rescue was dispatched from Barrow, Alaska, located northwest of the accident site.

According to the two North Slope Borough Search and Rescue helicopter pilots that talked with the witness at the accident site, the pilot and the witness had shot a caribou, about 1 mile from where their airplane was parked. The witness said that while she stayed at the site to butcher the caribou, the pilot hiked to the airplane to reposition it closer to the caribou. She said that prior to the accident, the pilot made a series of low passes over his intended landing site. During the accident approach, while the airplane was about 100 feet agl, the airplane nosed down and the airplane descended nose first. The airplane collided with the ground in a near vertical, nose down attitude. The airplane sustained substantial damage to the wings, fuselage, and empennage.

According to the NTSB Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2) submitted by the pilot, he reported that he remembers hiking to the airplane, disassembling the camp site, and loading the airplane. He stated that the last thing he can recall was while he was on final approach to the site, but he has no recollection of the accident. The pilot noted in the report that there were no preaccident mechanical anomalies noted with the airplane.

Aircraft

Registration
N3546P
Reported as
Piper PA-22-150
Category
Airplane
Serial number
22-3302
Engine
Lycoming O-320-B, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Howard A. Tieden
Airworthiness certificate
Standard, Normal
Departed
Deadhorse, AK
Destination
Deadhorse, AK

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
46
Injuries
Serious
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
April 1, 2006
Seat
Left
Flight hours
1,078 total · 220 in this make and model · 100 in the last 90 days · 70 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 5 knots
Visibility
10 statute miles
Lowest ceiling
10,000 ft broken
Temperature
61 °F

FAA reports on this event · 1

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