ANC09LA034

NTSB accident investigation · Cessna 152 · Talkeetna, AK · April 17, 2009

Accident · No injuriesLimited investigationFinal report
Date
April 16, 2009, 17:30 local (Apr 17, 2009, 01:30 UTC)
Place
Talkeetna, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N46326Cessna 152
Defining event
Maneuvering-low-alt flying: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report July 28, 2009
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA FSDO
FAA report
20090416025159A
Case key
73674

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 NTSB’s determination of the probable cause, and any contributing factors.

The pilot's failure to maintain adequate airspeed to avoid an aerodynamic stall while maneuvering at a high density altitude.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings.

Analysis

The private pilot said that he was on a personal local flight when he made a low pass about 100 feet over a camp on a glacier, at about 7,200 feet elevation. He made the pass with full flaps, with approximately 65 knots of airspeed. When he retracted the flaps, he said that the airplane descended uncontrolled into the snow, despite the full application of power. The pilot indicated that there were no known mechanical problems with the airplane prior to the accident. The airplane sustained substantial damage to the wings and fuselage during impact.

Factual narrative

On April 16, 2009, about 1730 Alaska daylight time, a ski-equipped Cessna 152 airplane, N46326, sustained substantial damage during an uncontrolled descent and impact with terrain, about 60 miles west-northwest of Talkeetna, Alaska. The airplane was being operated by the pilot as a visual flight rules personal local flight under Title 14, CFR Part 91, when the accident occurred. The private pilot and sole passenger were not injured. Visual meteorological conditions prevailed, and no flight plan was filed. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on April 17, the pilot said he made a low pass, about 100 feet above the ground, over the mountain climber's base camp on Mt. McKinley, on the Kahiltna Glacier, elevation about 7,200 feet. He said he made the pass with full flaps, about 65 knots of airspeed, and when he retracted the flaps, the airplane descended into the snow. He said with full power he was unable to arrest the descent. The pilot said there were no known mechanical problems with the airplane prior to the accident, and that the airplane sustained substantial damage to the wings and fuselage during the impact.

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident.

Aircraft

Registration
N46326
Reported as
Cessna 152
Category
Airplane
Serial number
15283031
Airframe hours
2,759
Engine
Lycoming O-235 SERIES, 115 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Bouvrie Lukas J
Registered owner
Bouvrie Lukas J
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 1, 2008
Departed
Eagle river, AK
Destination
Eagle river, 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
28
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Without waivers/limitations
Last flight review
March 13, 2008
Seat
Left
Flight hours
187 total · 131 in this make and model · 113 as pilot in command · 6 in the last 90 days · 6 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
34 °F, dew point 19 °F
Altimeter
29.97 inHg
Observed at
TKA, 60 nm away

Docket · 1

The files NTSB released with the investigation on June 1, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 722 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 N46326 · 2

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