- 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.