ERA11CA024

NTSB accident investigation · Cessna 180 · Summner, ME · October 17, 2010

Accident · Minor injuriesData collectionFinal report
Date
October 17, 2010, 09:30 local (13:30 UTC)
Place
Summner, ME
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N2576KCessna 180
Defining event
Landing: Aerodynamic stall/spin
Weather
Visual (VMC) · Day
Status
Completed · report May 16, 2011
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20101017049859A
Case key
77606

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 final approach resulting in an aerodynamic stall and a subsequent hard landing.

Findings · 2

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAll aircraft: 9,295 casesProbable cause
Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedAll aircraft: 1,681 casesProbable cause

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

According to the pilot, while the airplane was on final approach at the destination airport, it encountered a downdraft and he was unable to arrest the descent rate, even with full power. A witness stated that the wind at the airport at the time of the accident was 8-10 knots. The nearest weather reporting station also reported that the wind was from 360 degrees at 6 knots. Another witness also reported that the pilot of the accident airplane would usually approach at a slow approach speed for landing. Review of a video recording that was made at the airport on the day of the accident also confirmed that there was little or no wind present during the accident, and that the airplane appeared to approach the runway at a slower airspeed than similar airplanes. Further review of the video also revealed that, while on short final, the airplane had developed a high sink rate and rapidly rolled to the right just prior to impact with the turf runway. No sound of an increase of engine power was recorded until just prior to ground contact. During an interview, the pilot stated there were no mechanical malfunctions with the airplane. Examination of the airplane by a Federal Aviation Administration inspector revealed that during the accident the airplane incurred substantial structural damage to the landing gear assembly bulkhead.

Factual narrative

The pilot stated that, while he was on final approach at his destination airport, he caught a downdraft on short final and was unable to arrest the descent rate, even with full power. A witness at the airport advised the Safety Board however, that the wind at the airport at the time of the accident was 8-10 knots. The nearest weather reporting station also reported that the winds were from 360 degrees true at 6 knots. Another witness also advised the Safety Board that the pilot of the accident airplane would usually approach at a slow approach speed for landing. Review of a video recording that was made at the airport on the day of the accident also confirmed that there was little or no wind present during the accident, and that the airplane appeared to approach the runway at a slower airspeed than similar airplanes. Further review of the video also revealed, that while on short final, the airplane had developed a high sink rate, and had began to rapidly roll to the right just prior to impact with the turf runway. No sound of an increase of engine power was recorded until just prior to ground contact. During an interview, the pilot stated there were no mechanical malfunctions with the airplane. Examination of the airplane by a Federal Aviation Administration Inspector revealed that during the accident, the airplane had incurred substantial structural damage to the landing gear assembly bulkhead.

Aircraft

Registration
N2576K
Reported as
Cessna 180 (K)
Category
Airplane
Serial number
18052998
Airframe hours
3,035
Engine
Continental O470, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Clinton Goodhue
Registered owner
Clinton Goodhue
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 28, 2010
Departed
Sidney, ME
Destination
Summner, ME
Flight plan
VFR
Airport
N/A · East Sumner

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
70
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land
Medical
Class 2, With waivers/limitations
Last flight review
January 2, 2010
Seat
Right
Flight hours
5,057 total · 3,000 in this make and model · 78 in the last 90 days · 12 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
50 °F, dew point 34 °F
Altimeter
29.71 inHg
Observed at
LEW, 21 nm away

FAA reports on this event · 1

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