ANC08LA094

NTSB accident investigation · Cessna 172 · Anchorage, AK · August 2, 2008

Accident · No injuriesLimited investigationFinal report
Date
August 1, 2008, 16:30 local (Aug 2, 2008, 00:30 UTC)
Place
Anchorage, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N2357UCessna 172
Defining event
Landing-flare/touchdown: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report January 29, 2009
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA-AL-ANC FSDO 03
FAA report
20080801843069A
Case key
68603

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 directional control during the landing flare/touchdown, which resulted in a runway excursion and collapse of the nose gear.

Findings · 4

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.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 172D: 2 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCessna 172D: 4 casesAll aircraft: 9,295 casesProbable cause
WindEnvironmental issues › Conditions/weather/phenomena · Response/compensationCessna 172D: 1 caseAll aircraft: 110 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 was landing on runway 25, and indicated that just as the main landing gear tires touched down, the airplane was struck by a strong wind from the right. The pilot attempted to correct for the wind, and added engine power, but the airplane departed the left side of the runway. The nose gear collapsed when it encountered soft terrain along the side of the runway, which spun the airplane around about 180 degrees. The wind conditions were reported as 280 degrees (true) at 11 knots. In the "Recommendation" (How could this accident have been prevented) section of the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1) submitted by the pilot, the pilot noted he could have utilized "Better use of aileron and rudder for directional control."

Factual narrative

On August 1, 2008, about 1630 Alaska daylight time, a Cessna 172 airplane, N2357U, sustained substantial damage when it departed the runway during the landing flare/touchdown at Merrill Field, Anchorage, 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 airplane was operated by the pilot. The commercial certificated pilot, and the sole passenger, were not injured. Visual meteorological conditions prevailed, and a VFR flight plan was filed. The flight originated at the Homer Airport, Homer, Alaska, about 1430.During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on August 5, the pilot reported that he was landing on runway 25 at Merrill Field. During the landing flare, just as the main landing gear tires touched down, the airplane was struck by a strong wind from the right. The pilot attempted to correct for the wind, and added engine power, but the airplane departed the left side of the runway. The nose gear collapsed when it encountered soft terrain along the side of the runway, which spun the airplane around about 180 degrees. At 1634, an aviation routine weather report (METAR) at Merrill Field was reporting, in part: Wind, 280 degrees (true) at 11 knots; visibility, 10 statute miles; clouds and sky condition, 5,000 feet broken; temperature, 61 degrees F; dew point, 52 degrees F; altimeter, 28.89 inHg. In the "Recommendation" (How could this accident have been prevented) section of the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1) submitted by the pilot, the pilot noted he could have utilized "Better use of aileron and rudder for directional control."

Aircraft

Registration
N2357U
Reported as
Cessna 172
Category
Airplane
Serial number
17249957
Airframe hours
2,688
Engine
Continental O-300, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Carl A. Dirkers
Registered owner
Carl A. Dirkers
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 31, 2008 · 25 hours before
Departed
PAHO · Homer, AK
Destination
PAMR · Anchorage, AK
Flight plan
VFR
Airport
PAMR · Merrill Field, runway 25, 4,000 × 100 ft, asphalt

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
61
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
April 23, 2007
Seat
Left
Flight hours
1,557 total · 1,400 in this make and model · 46 in the last 90 days · 3 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 11 knots
Visibility
10 statute miles
Lowest ceiling
5,000 ft broken
Temperature
61 °F, dew point 52 °F
Altimeter
28.88 inHg
Observed at
PAMR

FAA reports on this event · 1

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